COnverted astleyrm to HTML
This commit is contained in:
Claudio Maggioni
parent
48f648cae3
commit
c04a7848b9
9 changed files with 380 additions and 166 deletions
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@ -0,0 +1,128 @@
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---
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layout: post
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title: "How to rickroll people that try to run \"rm -rf\" on your system"
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date: 2016-07-28 16:00:00 +0200
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categories: linux
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---
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<strong>
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WARNING: The method showed here could not prevent the actual execution of "rm -rf" if the "UNIX vandal" is clever enough. Proceed at your own risk, and make backups!
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</strong>
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<p>
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I like Rick Astley late 80's songs, and you can see them here in my Spotify:
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</p>
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<p>
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<img
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src="https://dl.dropboxusercontent.com/s/t9vywa4yjotxv0o/Screenshot_20160728_154506.png?dl=0"
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alt="My Spotify with a bunch of Rick Astley songs">
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</p>
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<p>
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I like rickrolling people too, especially if they are trying to delete my entire
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<code>/home</code> directory or, even worse, <code>/</code>. Since I learned
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how to use the <code>alias</code> built-in, I wanted a way to prevent that
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random people tinkering with my laptop (that I may forgot to lock) could
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delete potentially important stuff, just for fun or boredom.
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</p>
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<p>
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The method that I will show will lock any <code>rm</code> command runned in
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both recursive and force mode, so <code>rm -rf</code>, <code>rm -f -r</code>
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and <code>rm -r --force</code> are all blocked, even if they are runned with
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<code>sudo</code>. I am going to alias the rm command in
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<code>/etc/profile</code>, <code>/etc/bash.bashrc</code> and in
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<code>/etc/zsh/zshrc</code> (I am a zsh user) so that the rickroll will be
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possible from all users, even root and the ones with a brand new
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<code>.bashrc</code> or <code>.zshrc</code>. Here is the code I appended to
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those files:
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</p>
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<p>
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{% highlight bash %}
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alias rm=/bin/rmAlias
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alias sudo='sudo ' # this enables aliases in sudo, see http://askubuntu.com/questions/22037/aliases-not-available-when-using-sudo
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{% endhighlight %}
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</p>
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<p>
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Since <code>alias</code> is not able to control the flags of the aliases (see
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<a href="http://apple.stackexchange.com/questions/50963/how-do-i-add-a-flag-to-an-alias">here</a>, we are going to redirect each call of <code>rm</code> to
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<code>/bin/rmAlias</code>, that would run the command if it is safe. I did
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not use a function because it is a bit tricky to make that work with
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<code>sudo</code>. So, let's see the code I put in <code>rmAlias</code>:
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</p>
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<p>
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{% highlight bash %}
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#! /bin/bash
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# Rickroll whoever tries to desert this system, even root.
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# To achieve this, set the appropriate aliases even in /etc/profile and similars.
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# Video played when rickrolling
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ROLLVIDEO=/opt/anti-rm/serious-video.mkv # it's just Never Gonna Give You Up on my system, but be free to customize this!
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rickroll(){
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echo "Never gonna desert this system..."
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xdg-open $ROLLVIDEO 2>&1 &
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exit 0
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}
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while getopts ":rf-" opt; do
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# Prevent '--force' to be detected as -r and -f
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if [ "$opt" = "-" ]; then
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OPTIND=$OPTIND+1
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continue
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fi
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if [ "$opt" = "r" ] || [ "$opt" = "f" ]; then
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if [ "$tmp" = "" ]; then
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tmp=$opt
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continue
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elif [ "$tmp" != "$opt" ]; then
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rickroll
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fi
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fi
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done
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for var in "$@"
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do
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if [[ "$var" = "--force" && "$tmp" = "r" ]]; then
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rickroll
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fi
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done
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# If it's safe, just run rm
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/bin/rm "$@"
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exit $?
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{% endhighlight %}
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</p>
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<p>
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It may look messy to a <em>UNIX</em> guy more experienced than me, but it
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works. The <code>getopts</code> built-in sees if both the <code>-r</code> and
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the <code>-f</code> flags are used and, if so, it starts
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<code>rickroll()</code>, which opens with <code>xdg-open</code> that amazing
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clip from <em>RickAstleyVEVO</em>. From line 30 and below, the script checks
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if the <code>--force</code> flag is used instead of <code>-f</code>.
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</p>
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<p>
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Let's give execution permissions to the script we have just created:
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</p>
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<p>
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{% highlight bash %}
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# chmod +x /bin/rmAlias
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{% endhighlight %}
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</p>
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<p>
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Restart your shell, and enjoy. If you want to test safely, I suggest trying
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to run <code>rm -rf</code> with no folders or a nonexistant one, since this
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script stops even these commands.
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</p>
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<p>
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If you want even more security, you can rename this script to
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<code>/bin/rm</code> and move the original one in some other place, getting rid of all the aliases. I prefer the solution above because it's tidier: you haven't to move anything. In fact, this could be just an AUR package...
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</p>
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@ -1,78 +0,0 @@
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---
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layout: post
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||||
title: "How to rickroll people that try to run \"rm -rf\" on your system"
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||||
date: 2016-07-28 16:00:00 +0200
|
||||
categories: linux
|
||||
---
|
||||
<strong>
|
||||
WARNING: The method showed here could not prevent the actual execution of "rm -rf" if the "UNIX vandal" is clever enough. Proceed at your own risk, and make backups!
|
||||
</strong>
|
||||
|
||||
I like Rick Astley late 80's songs, and you can see them here in my Spotify:
|
||||
|
||||
|
||||
|
||||
I like rickrolling people myself too, especially if they're trying to delete my entire `/home` directory or, even worse, `/`. Since I learned how to use the `alias` built-in, I wanted a way to prevent that random people tinkering with my laptop (that I may forgot to lock) could delete potentially important stuff, just for fun or boredom.
|
||||
|
||||
The method that I'll show will lock any `rm` command runned in both recursive and force mode, so `rm -rf`, `rm -f -r` and `rm -r --force` are all blocked, even if they are launched by `sudo`. I'm going to alias the rm command in `/etc/profile` `/etc/bash.bashrc` and in `/etc/zsh/zshrc` (I'm a zsh user) so that the rickroll will be possible from all users, even root and the ones with a brand new `bashrc` or `zshrc`. Here is the code I appended to those files:
|
||||
|
||||
{% highlight bash %}
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alias rm=/bin/rmAlias
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alias sudo='sudo ' # this enables aliases in sudo, see http://askubuntu.com/questions/22037/aliases-not-available-when-using-sudo
|
||||
{% endhighlight %}
|
||||
|
||||
Since `alias` is not able to control the flags of the aliases (see [here](http://apple.stackexchange.com/questions/50963/how-do-i-add-a-flag-to-an-alias)), we're going to redirect each call of `rm` to `/bin/rmAlias`, that would run the command if it's safe. I didn't use a function because it's a bit tricky to make that work with `sudo`. So, let's see the code I put in `rmAlias`:
|
||||
|
||||
{% highlight bash %}
|
||||
#! /bin/bash
|
||||
# Rickroll whoever tries to desert this system, even root.
|
||||
# To achieve this, set the appropriate aliases even in /etc/profile and similars.
|
||||
|
||||
# Video played when rickrolling
|
||||
ROLLVIDEO=/opt/anti-rm/serious-video.mkv # it's just Never Gonna Give You Up on my system, but be free to customize this!
|
||||
|
||||
rickroll(){
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echo "Never gonna desert this system..."
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xdg-open $ROLLVIDEO 2>&1 &
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exit 0
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}
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|
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while getopts ":rf-" opt; do
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# Prevent '--force' to be detected as -r and -f
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if [ "$opt" = "-" ]; then
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OPTIND=$OPTIND+1
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continue
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fi
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if [ "$opt" = "r" ] || [ "$opt" = "f" ]; then
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if [ "$tmp" = "" ]; then
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tmp=$opt
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continue
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elif [ "$tmp" != "$opt" ]; then
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rickroll
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fi
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fi
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done
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for var in "$@"
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do
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if [[ "$var" = "--force" && "$tmp" = "r" ]]; then
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rickroll
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fi
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done
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# If it's safe, just run rm
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/bin/rm "$@"
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exit $?
|
||||
{% endhighlight %}
|
||||
|
||||
It may look messy to a UNIX guy more experienced than me, but it works. The `getopts` built-in sees if both the `-r` and the `-f` flags are used and, if so, it starts `rickroll()`, which opens with `xdg-open` that amazing clip from RickAstleyVEVO. From line 30 and below, the script checks if the `--force` flag is used instead of `-f`.
|
||||
|
||||
Give execute permissions to the script we've just created:
|
||||
|
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{% highlight bash %}
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# chmod +x /bin/rmAlias
|
||||
{% endhighlight %}
|
||||
|
||||
Restart your shell, and enjoy. If you want to test safely, I suggest trying to run `rm -rf` with no folders or one nonexistant, since this script stop even these commands.
|
||||
|
||||
If you want even more security, you can rename this script to `/bin/rm` and move the original one in some other place, getting rid of all the aliases. I prefer the solution above because it's tidier: you haven't to move anything. In fact, this could be just an AUR package...
|
||||
|
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@ -58,24 +58,18 @@ a {
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blockquote {
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color: $grey-color;
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border-left: 4px solid $grey-color-light;
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padding-left: $spacing-unit / 2;
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font-size: 18px;
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letter-spacing: -1px;
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font-style: italic;
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||||
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margin: 1rem 0;
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padding: 1em;
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> :last-child {
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margin-bottom: 0;
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||||
}
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||||
}
|
||||
|
||||
/**
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* Code formatting
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*/
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||||
pre, code {
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||||
font-size: 15px;
|
||||
background: rgb(66,66,66);
|
||||
}
|
||||
|
||||
/* do not put padding around the table with line numbers and the code */
|
||||
code table {
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||||
margin: -8px -12px;
|
||||
}
|
||||
|
|
@ -95,6 +89,26 @@ pre {
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|||
}
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}
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||||
|
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/* pull a nice monospace font from the internets, plus set font and
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* background */
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||||
pre, code {
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font-size: 0.95rem;
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||||
background: rgb(66,66,66);
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||||
font-family: "Source Code Pro", monospace;
|
||||
}
|
||||
|
||||
/* Disable borders between line numbers and code when
|
||||
* line numbers are shown */
|
||||
code .rouge-table, code .rouge-table td {
|
||||
border: 0;
|
||||
border-radius: 0;
|
||||
}
|
||||
|
||||
code .rouge-table {
|
||||
border-spacing: 0;
|
||||
border-collapse: collapse;
|
||||
}
|
||||
|
||||
/**
|
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* Basic layout rules
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||||
*/
|
||||
|
|
@ -116,46 +130,33 @@ h6 { font-size: 0.8rem; }
|
|||
* General style for the content inside main
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*/
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||||
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||||
/* separate article metadata to the article itself with some space */
|
||||
article .post-header {
|
||||
margin-bottom: 3rem;
|
||||
}
|
||||
|
||||
main article {
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||||
margin-bottom: 2em;
|
||||
/* put some space at the end of each article and at the end of each section */
|
||||
main article, main section {
|
||||
margin-bottom: 2rem;
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||||
}
|
||||
|
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/* justify text */
|
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p {
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text-align: justify;
|
||||
}
|
||||
|
||||
/* put a space between paragraphs and images */
|
||||
p, figure {
|
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margin-top: 1.2rem;
|
||||
}
|
||||
|
||||
/* the first paragraph has no space at the top (since that is provided
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* by either main or h? */
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p:first-child {
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margin-top: 0;
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}
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/**
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* Syntax highlighting
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*/
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pre, code {
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font-family: "Source Code Pro", monospace;
|
||||
}
|
||||
|
||||
/* Disable borders between line numbers and code when
|
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* line numbers are shown */
|
||||
code .rouge-table, code .rouge-table td {
|
||||
border: 0;
|
||||
border-radius: 0;
|
||||
}
|
||||
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||||
code .rouge-table {
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||||
border-spacing: 0;
|
||||
border-collapse: collapse;
|
||||
}
|
||||
|
||||
/* make strongly emphasized elements REALLY STRONG */
|
||||
strong {
|
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background: #aa2222;
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||||
}
|
||||
|
|
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|||
|
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@ -47,20 +47,15 @@ a {
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blockquote {
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color: #828282;
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border-left: 4px solid #e8e8e8;
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padding-left: 15px;
|
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font-size: 18px;
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letter-spacing: -1px;
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font-style: italic; }
|
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font-style: italic;
|
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margin: 1rem 0;
|
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padding: 1em; }
|
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blockquote > :last-child {
|
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margin-bottom: 0; }
|
||||
|
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/**
|
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* Code formatting
|
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*/
|
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pre, code {
|
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font-size: 15px;
|
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background: #424242; }
|
||||
|
||||
/* do not put padding around the table with line numbers and the code */
|
||||
code table {
|
||||
margin: -8px -12px; }
|
||||
|
||||
|
|
@ -75,6 +70,23 @@ pre {
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|||
padding-right: 0;
|
||||
padding-left: 0; }
|
||||
|
||||
/* pull a nice monospace font from the internets, plus set font and
|
||||
* background */
|
||||
pre, code {
|
||||
font-size: 0.95rem;
|
||||
background: #424242;
|
||||
font-family: "Source Code Pro", monospace; }
|
||||
|
||||
/* Disable borders between line numbers and code when
|
||||
* line numbers are shown */
|
||||
code .rouge-table, code .rouge-table td {
|
||||
border: 0;
|
||||
border-radius: 0; }
|
||||
|
||||
code .rouge-table {
|
||||
border-spacing: 0;
|
||||
border-collapse: collapse; }
|
||||
|
||||
/**
|
||||
* Basic layout rules
|
||||
*/
|
||||
|
|
@ -105,37 +117,28 @@ h6 {
|
|||
/**
|
||||
* General style for the content inside main
|
||||
*/
|
||||
/* separate article metadata to the article itself with some space */
|
||||
article .post-header {
|
||||
margin-bottom: 3rem; }
|
||||
|
||||
main article {
|
||||
margin-bottom: 2em; }
|
||||
/* put some space at the end of each article and at the end of each section */
|
||||
main article, main section {
|
||||
margin-bottom: 2rem; }
|
||||
|
||||
/* justify text */
|
||||
p {
|
||||
text-align: justify; }
|
||||
|
||||
/* put a space between paragraphs and images */
|
||||
p, figure {
|
||||
margin-top: 1.2rem; }
|
||||
|
||||
/* the first paragraph has no space at the top (since that is provided
|
||||
* by either main or h? */
|
||||
p:first-child {
|
||||
margin-top: 0; }
|
||||
|
||||
/**
|
||||
* Syntax highlighting
|
||||
*/
|
||||
pre, code {
|
||||
font-family: "Source Code Pro", monospace; }
|
||||
|
||||
/* Disable borders between line numbers and code when
|
||||
* line numbers are shown */
|
||||
code .rouge-table, code .rouge-table td {
|
||||
border: 0;
|
||||
border-radius: 0; }
|
||||
|
||||
code .rouge-table {
|
||||
border-spacing: 0;
|
||||
border-collapse: collapse; }
|
||||
|
||||
/* make strongly emphasized elements REALLY STRONG */
|
||||
strong {
|
||||
background: #aa2222; }
|
||||
|
||||
|
|
|
|||
|
|
@ -6,29 +6,60 @@
|
|||
</description>
|
||||
<link>http://localhost:4000/</link>
|
||||
<atom:link href="http://localhost:4000/feed.xml" rel="self" type="application/rss+xml"/>
|
||||
<pubDate>Tue, 23 Oct 2018 17:24:59 +0200</pubDate>
|
||||
<lastBuildDate>Tue, 23 Oct 2018 17:24:59 +0200</lastBuildDate>
|
||||
<pubDate>Wed, 24 Oct 2018 13:52:54 +0200</pubDate>
|
||||
<lastBuildDate>Wed, 24 Oct 2018 13:52:54 +0200</lastBuildDate>
|
||||
<generator>Jekyll v3.8.4</generator>
|
||||
|
||||
<item>
|
||||
<title>How to rickroll people that try to run "rm -rf" on your system</title>
|
||||
<description><p><strong>
|
||||
WARNING: The method showed here could not prevent the actual execution of “rm -rf” if the “UNIX vandal” is clever enough. Proceed at your own risk, and make backups!
|
||||
</strong></p>
|
||||
<description><strong>
|
||||
WARNING: The method showed here could not prevent the actual execution of "rm -rf" if the "UNIX vandal" is clever enough. Proceed at your own risk, and make backups!
|
||||
</strong>
|
||||
|
||||
<p>I like Rick Astley late 80’s songs, and you can see them here in my Spotify:</p>
|
||||
<p>
|
||||
I like Rick Astley late 80's songs, and you can see them here in my Spotify:
|
||||
</p>
|
||||
|
||||
<p><img src="https://dl.dropboxusercontent.com/s/t9vywa4yjotxv0o/Screenshot_20160728_154506.png?dl=0" alt="dQw4w9WgXcQ" /></p>
|
||||
<p>
|
||||
<img
|
||||
src="https://dl.dropboxusercontent.com/s/t9vywa4yjotxv0o/Screenshot_20160728_154506.png?dl=0"
|
||||
alt="My Spotify with a bunch of Rick Astley songs">
|
||||
</p>
|
||||
|
||||
<p>I like rickrolling people myself too, especially if they’re trying to delete my entire <code class="highlighter-rouge">/home</code> directory or, even worse, <code class="highlighter-rouge">/</code>. Since I learned how to use the <code class="highlighter-rouge">alias</code> built-in, I wanted a way to prevent that random people tinkering with my laptop (that I may forgot to lock) could delete potentially important stuff, just for fun or boredom.</p>
|
||||
<p>
|
||||
I like rickrolling people too, especially if they are trying to delete my entire
|
||||
<code>/home</code> directory or, even worse, <code>/</code>. Since I learned
|
||||
how to use the <code>alias</code> built-in, I wanted a way to prevent that
|
||||
random people tinkering with my laptop (that I may forgot to lock) could
|
||||
delete potentially important stuff, just for fun or boredom.
|
||||
</p>
|
||||
|
||||
<p>The method that I’ll show will lock any <code class="highlighter-rouge">rm</code> command runned in both recursive and force mode, so <code class="highlighter-rouge">rm -rf</code>, <code class="highlighter-rouge">rm -f -r</code> and <code class="highlighter-rouge">rm -r --force</code> are all blocked, even if they are launched by <code class="highlighter-rouge">sudo</code>. I’m going to alias the rm command in <code class="highlighter-rouge">/etc/profile</code> <code class="highlighter-rouge">/etc/bash.bashrc</code> and in <code class="highlighter-rouge">/etc/zsh/zshrc</code> (I’m a zsh user) so that the rickroll will be possible from all users, even root and the ones with a brand new <code class="highlighter-rouge">bashrc</code> or <code class="highlighter-rouge">zshrc</code>. Here is the code I appended to those files:</p>
|
||||
<p>
|
||||
The method that I will show will lock any <code>rm</code> command runned in
|
||||
both recursive and force mode, so <code>rm -rf</code>, <code>rm -f -r</code>
|
||||
and <code>rm -r --force</code> are all blocked, even if they are runned with
|
||||
<code>sudo</code>. I am going to alias the rm command in
|
||||
<code>/etc/profile</code>, <code>/etc/bash.bashrc</code> and in
|
||||
<code>/etc/zsh/zshrc</code> (I am a zsh user) so that the rickroll will be
|
||||
possible from all users, even root and the ones with a brand new
|
||||
<code>.bashrc</code> or <code>.zshrc</code>. Here is the code I appended to
|
||||
those files:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="nb">alias rm</span><span class="o">=</span>/bin/rmAlias
|
||||
<span class="nb">alias sudo</span><span class="o">=</span><span class="s1">'sudo '</span> <span class="c"># this enables aliases in sudo, see http://askubuntu.com/questions/22037/aliases-not-available-when-using-sudo</span></code></pre></figure>
|
||||
</p>
|
||||
|
||||
<p>Since <code class="highlighter-rouge">alias</code> is not able to control the flags of the aliases (see <a href="http://apple.stackexchange.com/questions/50963/how-do-i-add-a-flag-to-an-alias">here</a>), we’re going to redirect each call of <code class="highlighter-rouge">rm</code> to <code class="highlighter-rouge">/bin/rmAlias</code>, that would run the command if it’s safe. I didn’t use a function because it’s a bit tricky to make that work with <code class="highlighter-rouge">sudo</code>. So, let’s see the code I put in <code class="highlighter-rouge">rmAlias</code>:</p>
|
||||
<p>
|
||||
Since <code>alias</code> is not able to control the flags of the aliases (see
|
||||
<a href="http://apple.stackexchange.com/questions/50963/how-do-i-add-a-flag-to-an-alias">here</a>, we are going to redirect each call of <code>rm</code> to
|
||||
<code>/bin/rmAlias</code>, that would run the command if it is safe. I did
|
||||
not use a function because it is a bit tricky to make that work with
|
||||
<code>sudo</code>. So, let's see the code I put in <code>rmAlias</code>:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="c">#! /bin/bash</span>
|
||||
<span class="c"># Rickroll whoever tries to desert this system, even root.</span>
|
||||
<span class="c"># To achieve this, set the appropriate aliases even in /etc/profile and similars.</span>
|
||||
|
|
@ -68,16 +99,35 @@ done</span>
|
|||
<span class="c"># If it's safe, just run rm</span>
|
||||
/bin/rm <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span>
|
||||
<span class="nb">exit</span> <span class="nv">$?</span></code></pre></figure>
|
||||
</p>
|
||||
|
||||
<p>It may look messy to a UNIX guy more experienced than me, but it works. The <code class="highlighter-rouge">getopts</code> built-in sees if both the <code class="highlighter-rouge">-r</code> and the <code class="highlighter-rouge">-f</code> flags are used and, if so, it starts <code class="highlighter-rouge">rickroll()</code>, which opens with <code class="highlighter-rouge">xdg-open</code> that amazing clip from RickAstleyVEVO. From line 30 and below, the script checks if the <code class="highlighter-rouge">--force</code> flag is used instead of <code class="highlighter-rouge">-f</code>.</p>
|
||||
<p>
|
||||
It may look messy to a <em>UNIX</em> guy more experienced than me, but it
|
||||
works. The <code>getopts</code> built-in sees if both the <code>-r</code> and
|
||||
the <code>-f</code> flags are used and, if so, it starts
|
||||
<code>rickroll()</code>, which opens with <code>xdg-open</code> that amazing
|
||||
clip from <em>RickAstleyVEVO</em>. From line 30 and below, the script checks
|
||||
if the <code>--force</code> flag is used instead of <code>-f</code>.
|
||||
</p>
|
||||
|
||||
<p>Give execute permissions to the script we’ve just created:</p>
|
||||
<p>
|
||||
Let's give execution permissions to the script we have just created:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="c"># chmod +x /bin/rmAlias</span></code></pre></figure>
|
||||
</p>
|
||||
|
||||
<p>Restart your shell, and enjoy. If you want to test safely, I suggest trying to run <code class="highlighter-rouge">rm -rf</code> with no folders or one nonexistant, since this script stop even these commands.</p>
|
||||
<p>
|
||||
Restart your shell, and enjoy. If you want to test safely, I suggest trying
|
||||
to run <code>rm -rf</code> with no folders or a nonexistant one, since this
|
||||
script stops even these commands.
|
||||
</p>
|
||||
|
||||
<p>If you want even more security, you can rename this script to <code class="highlighter-rouge">/bin/rm</code> and move the original one in some other place, getting rid of all the aliases. I prefer the solution above because it’s tidier: you haven’t to move anything. In fact, this could be just an AUR package…</p>
|
||||
<p>
|
||||
If you want even more security, you can rename this script to
|
||||
<code>/bin/rm</code> and move the original one in some other place, getting rid of all the aliases. I prefer the solution above because it's tidier: you haven't to move anything. In fact, this could be just an AUR package...
|
||||
</p>
|
||||
</description>
|
||||
<pubDate>Thu, 28 Jul 2016 16:00:00 +0200</pubDate>
|
||||
<link>http://localhost:4000/linux/2016/07/28/how-to-rickroll-people-launching-rm-rf-on-your-system.html</link>
|
||||
|
|
|
|||
|
|
@ -92,7 +92,37 @@
|
|||
</header>
|
||||
<main class="container">
|
||||
<div class="home">
|
||||
<h1>Welcome on Claudio Maggioni's website!</h1>
|
||||
<section>
|
||||
<h1>Welcome to Claudio Maggioni's website!</h1>
|
||||
<p>Right now this page is almost empty because I have nothing to put in.
|
||||
But remember:</p>
|
||||
<blockquote>
|
||||
<p>Eat <a target="_blank" href="https://en.wikipedia.org/wiki/Polenta">
|
||||
<em>polenta</em></a> and do not counter-aim!</p>
|
||||
</blockquote>
|
||||
<p>The original, in italian:</p>
|
||||
<blockquote>
|
||||
<p>Mangiate la
|
||||
<a target="_blank" href="https://it.wikipedia.org/wiki/Polenta">
|
||||
<em>polenta</em>
|
||||
</a>
|
||||
e non contromirate!</p>
|
||||
</blockquote>
|
||||
</section>
|
||||
<section>
|
||||
<h2>Self-hosted stuff</h2>
|
||||
<p>
|
||||
Here are the <em>awesome</em> services provided by <code>maggioni.xyz</code>:
|
||||
</p>
|
||||
<ul>
|
||||
<li><a href="https://git.maggioni.xyz">Gogs</a>, a private Git HTTP frontend;</li>
|
||||
<li><a href="https://ci.maggioni.xyz">Drone CI</a>, a private CI/CD server;</li>
|
||||
<li><a href="https://cloud.maggioni.xyz"><code>maggioni.xyz</code> cloud</a>,
|
||||
a private <em>Nextcloud</em> instance;</li>
|
||||
<li><a href="https://download.maggioni.xyz">Download area</a>, a generic download
|
||||
area for the stuff that i want to put in.</li>
|
||||
</ul>
|
||||
</section>
|
||||
</div>
|
||||
|
||||
</main>
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@
|
|||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
|
||||
<title>How to rickroll people that try to run "rm -rf" on your system</title>
|
||||
<meta name="description" content="WARNING: The method showed here could not prevent the actual execution of “rm -rf” if the “UNIX vandal” is clever enough. Proceed at your own risk, and make ...">
|
||||
<meta name="description" content="WARNING: The method showed here could not prevent the actual execution of "rm -rf" if the "UNIX vandal" is clever enough. Proceed at your own risk, and make ...">
|
||||
|
||||
<link rel="stylesheet" href="/css/main.css">
|
||||
<link href='https://fonts.googleapis.com/css?family=Hammersmith+One' rel='stylesheet' type='text/css'>
|
||||
|
|
@ -98,23 +98,54 @@
|
|||
</header>
|
||||
|
||||
<div class="post-content" itemprop="articleBody">
|
||||
<p><strong>
|
||||
WARNING: The method showed here could not prevent the actual execution of “rm -rf” if the “UNIX vandal” is clever enough. Proceed at your own risk, and make backups!
|
||||
</strong></p>
|
||||
<strong>
|
||||
WARNING: The method showed here could not prevent the actual execution of "rm -rf" if the "UNIX vandal" is clever enough. Proceed at your own risk, and make backups!
|
||||
</strong>
|
||||
|
||||
<p>I like Rick Astley late 80’s songs, and you can see them here in my Spotify:</p>
|
||||
<p>
|
||||
I like Rick Astley late 80's songs, and you can see them here in my Spotify:
|
||||
</p>
|
||||
|
||||
<p><img src="https://dl.dropboxusercontent.com/s/t9vywa4yjotxv0o/Screenshot_20160728_154506.png?dl=0" alt="dQw4w9WgXcQ" /></p>
|
||||
<p>
|
||||
<img
|
||||
src="https://dl.dropboxusercontent.com/s/t9vywa4yjotxv0o/Screenshot_20160728_154506.png?dl=0"
|
||||
alt="My Spotify with a bunch of Rick Astley songs">
|
||||
</p>
|
||||
|
||||
<p>I like rickrolling people myself too, especially if they’re trying to delete my entire <code class="highlighter-rouge">/home</code> directory or, even worse, <code class="highlighter-rouge">/</code>. Since I learned how to use the <code class="highlighter-rouge">alias</code> built-in, I wanted a way to prevent that random people tinkering with my laptop (that I may forgot to lock) could delete potentially important stuff, just for fun or boredom.</p>
|
||||
<p>
|
||||
I like rickrolling people too, especially if they are trying to delete my entire
|
||||
<code>/home</code> directory or, even worse, <code>/</code>. Since I learned
|
||||
how to use the <code>alias</code> built-in, I wanted a way to prevent that
|
||||
random people tinkering with my laptop (that I may forgot to lock) could
|
||||
delete potentially important stuff, just for fun or boredom.
|
||||
</p>
|
||||
|
||||
<p>The method that I’ll show will lock any <code class="highlighter-rouge">rm</code> command runned in both recursive and force mode, so <code class="highlighter-rouge">rm -rf</code>, <code class="highlighter-rouge">rm -f -r</code> and <code class="highlighter-rouge">rm -r --force</code> are all blocked, even if they are launched by <code class="highlighter-rouge">sudo</code>. I’m going to alias the rm command in <code class="highlighter-rouge">/etc/profile</code> <code class="highlighter-rouge">/etc/bash.bashrc</code> and in <code class="highlighter-rouge">/etc/zsh/zshrc</code> (I’m a zsh user) so that the rickroll will be possible from all users, even root and the ones with a brand new <code class="highlighter-rouge">bashrc</code> or <code class="highlighter-rouge">zshrc</code>. Here is the code I appended to those files:</p>
|
||||
<p>
|
||||
The method that I will show will lock any <code>rm</code> command runned in
|
||||
both recursive and force mode, so <code>rm -rf</code>, <code>rm -f -r</code>
|
||||
and <code>rm -r --force</code> are all blocked, even if they are runned with
|
||||
<code>sudo</code>. I am going to alias the rm command in
|
||||
<code>/etc/profile</code>, <code>/etc/bash.bashrc</code> and in
|
||||
<code>/etc/zsh/zshrc</code> (I am a zsh user) so that the rickroll will be
|
||||
possible from all users, even root and the ones with a brand new
|
||||
<code>.bashrc</code> or <code>.zshrc</code>. Here is the code I appended to
|
||||
those files:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="nb">alias rm</span><span class="o">=</span>/bin/rmAlias
|
||||
<span class="nb">alias sudo</span><span class="o">=</span><span class="s1">'sudo '</span> <span class="c"># this enables aliases in sudo, see http://askubuntu.com/questions/22037/aliases-not-available-when-using-sudo</span></code></pre></figure>
|
||||
</p>
|
||||
|
||||
<p>Since <code class="highlighter-rouge">alias</code> is not able to control the flags of the aliases (see <a href="http://apple.stackexchange.com/questions/50963/how-do-i-add-a-flag-to-an-alias">here</a>), we’re going to redirect each call of <code class="highlighter-rouge">rm</code> to <code class="highlighter-rouge">/bin/rmAlias</code>, that would run the command if it’s safe. I didn’t use a function because it’s a bit tricky to make that work with <code class="highlighter-rouge">sudo</code>. So, let’s see the code I put in <code class="highlighter-rouge">rmAlias</code>:</p>
|
||||
<p>
|
||||
Since <code>alias</code> is not able to control the flags of the aliases (see
|
||||
<a href="http://apple.stackexchange.com/questions/50963/how-do-i-add-a-flag-to-an-alias">here</a>, we are going to redirect each call of <code>rm</code> to
|
||||
<code>/bin/rmAlias</code>, that would run the command if it is safe. I did
|
||||
not use a function because it is a bit tricky to make that work with
|
||||
<code>sudo</code>. So, let's see the code I put in <code>rmAlias</code>:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="c">#! /bin/bash</span>
|
||||
<span class="c"># Rickroll whoever tries to desert this system, even root.</span>
|
||||
<span class="c"># To achieve this, set the appropriate aliases even in /etc/profile and similars.</span>
|
||||
|
|
@ -154,16 +185,35 @@ done</span>
|
|||
<span class="c"># If it's safe, just run rm</span>
|
||||
/bin/rm <span class="s2">"</span><span class="nv">$@</span><span class="s2">"</span>
|
||||
<span class="nb">exit</span> <span class="nv">$?</span></code></pre></figure>
|
||||
</p>
|
||||
|
||||
<p>It may look messy to a UNIX guy more experienced than me, but it works. The <code class="highlighter-rouge">getopts</code> built-in sees if both the <code class="highlighter-rouge">-r</code> and the <code class="highlighter-rouge">-f</code> flags are used and, if so, it starts <code class="highlighter-rouge">rickroll()</code>, which opens with <code class="highlighter-rouge">xdg-open</code> that amazing clip from RickAstleyVEVO. From line 30 and below, the script checks if the <code class="highlighter-rouge">--force</code> flag is used instead of <code class="highlighter-rouge">-f</code>.</p>
|
||||
<p>
|
||||
It may look messy to a <em>UNIX</em> guy more experienced than me, but it
|
||||
works. The <code>getopts</code> built-in sees if both the <code>-r</code> and
|
||||
the <code>-f</code> flags are used and, if so, it starts
|
||||
<code>rickroll()</code>, which opens with <code>xdg-open</code> that amazing
|
||||
clip from <em>RickAstleyVEVO</em>. From line 30 and below, the script checks
|
||||
if the <code>--force</code> flag is used instead of <code>-f</code>.
|
||||
</p>
|
||||
|
||||
<p>Give execute permissions to the script we’ve just created:</p>
|
||||
<p>
|
||||
Let's give execution permissions to the script we have just created:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<figure class="highlight"><pre><code class="language-bash" data-lang="bash"><span class="c"># chmod +x /bin/rmAlias</span></code></pre></figure>
|
||||
</p>
|
||||
|
||||
<p>Restart your shell, and enjoy. If you want to test safely, I suggest trying to run <code class="highlighter-rouge">rm -rf</code> with no folders or one nonexistant, since this script stop even these commands.</p>
|
||||
<p>
|
||||
Restart your shell, and enjoy. If you want to test safely, I suggest trying
|
||||
to run <code>rm -rf</code> with no folders or a nonexistant one, since this
|
||||
script stops even these commands.
|
||||
</p>
|
||||
|
||||
<p>If you want even more security, you can rename this script to <code class="highlighter-rouge">/bin/rm</code> and move the original one in some other place, getting rid of all the aliases. I prefer the solution above because it’s tidier: you haven’t to move anything. In fact, this could be just an AUR package…</p>
|
||||
<p>
|
||||
If you want even more security, you can rename this script to
|
||||
<code>/bin/rm</code> and move the original one in some other place, getting rid of all the aliases. I prefer the solution above because it's tidier: you haven't to move anything. In fact, this could be just an AUR package...
|
||||
</p>
|
||||
|
||||
</div>
|
||||
|
||||
|
|
|
|||
32
index.html
32
index.html
|
|
@ -3,5 +3,35 @@ layout: main
|
|||
---
|
||||
|
||||
<div class="home">
|
||||
<h1>Welcome on Claudio Maggioni's website!</h1>
|
||||
<section>
|
||||
<h1>Welcome to Claudio Maggioni's website!</h1>
|
||||
<p>Right now this page is almost empty because I have nothing to put in.
|
||||
But remember:</p>
|
||||
<blockquote>
|
||||
<p>Eat <a target="_blank" href="https://en.wikipedia.org/wiki/Polenta">
|
||||
<em>polenta</em></a> and do not counter-aim!</p>
|
||||
</blockquote>
|
||||
<p>The original, in italian:</p>
|
||||
<blockquote>
|
||||
<p>Mangiate la
|
||||
<a target="_blank" href="https://it.wikipedia.org/wiki/Polenta">
|
||||
<em>polenta</em>
|
||||
</a>
|
||||
e non contromirate!</p>
|
||||
</blockquote>
|
||||
</section>
|
||||
<section>
|
||||
<h2>Self-hosted stuff</h2>
|
||||
<p>
|
||||
Here are the <em>awesome</em> services provided by <code>maggioni.xyz</code>:
|
||||
</p>
|
||||
<ul>
|
||||
<li><a href="https://git.maggioni.xyz">Gogs</a>, a private Git HTTP frontend;</li>
|
||||
<li><a href="https://ci.maggioni.xyz">Drone CI</a>, a private CI/CD server;</li>
|
||||
<li><a href="https://cloud.maggioni.xyz"><code>maggioni.xyz</code> cloud</a>,
|
||||
a private <em>Nextcloud</em> instance;</li>
|
||||
<li><a href="https://download.maggioni.xyz">Download area</a>, a generic download
|
||||
area for the stuff that i want to put in.</li>
|
||||
</ul>
|
||||
</section>
|
||||
</div>
|
||||
|
|
|
|||
Loading…
Reference in a new issue