css-team: spellcheck

git-svn-id: svn+ssh://atelier.inf.usi.ch/home/bevilj/group-1@280 a672b425-5310-4d7a-af5c-997e18724b81

site/pages/scripts/0-base-commands.html

@@ -9,8 +9,8 @@ next-page: pages/scripts/1-variables.html
 ---
 <!-- Echo command text -->
 <h3>Echo</h3>
-<p>This command print as output its entire argument on the command-line.<br>
+<p>This command prints its entire argument as output on the command-line.<br>
-    It could be used with variables, like in the following example:<br>
+    It can be used with variables, like in the following example:<br>
 
 <pre>
 example="this is an example"
@@ -22,10 +22,10 @@ echo $example
 <!-- Cat command text -->
 <h3>Cat</h3>
 
-This command prints the content of a certain file as an output on the
+This command prints the content of a certain file as output on the
 command-line.<br>
 
-As example, we could imagine a simple text file in nano named "Hello", which contains
+For example, we could imagine a simple text file in nano named "Hello", which contains
 the line "Hello World".<br>
 So, our command example will look like this:<br>
 

site/pages/scripts/1-variables.html

@@ -10,13 +10,13 @@ next-page: pages/scripts/2-special-variables.html
 ---
 <!-- Intro -->
 A variable is simply a string to which we assign a certain type of data,
-which could be a text, a number, a filename and other types of data.<br>
+which could be some text, a number, a filename or other types of data.<br>
 
 <!-- How to name a variable - text -->
 <h3>Naming a variable</h3>
 
 <!-- Explaination -->
-To name a variable in Unix we have to use only letters, numbers or
+To name a variable in Unix we can only use letters, numbers or
 the underscore character (_).<br>
 Other characters can't be used because they have a special meaning in Unix Shell.<br>
 
@@ -32,7 +32,7 @@ name_4
 <!-- How to define a variable - text -->
 <h3>Defining a variable</h3>
 
-To define a certain variable, we could use the following basecase:
+To define a certain variable, we use the following base case:
 
 <pre>
 variable_name=variable_value
@@ -58,7 +58,7 @@ echo $VAR_1
 <!-- How to delete a variable - text -->
 <h3>Deleting a variable</h3>
 
-Deleting a variable means that shell will remove a certain variable from the list of
+Deleting a variable means that the shell will remove a certain variable from the list of
 those that it tracks.<br>
 To delete a variable we use the following command:
 
@@ -75,7 +75,7 @@ unset VAR_1
 <!-- How to protect a variable - text -->
 <h3>Protecting variables</h3>
 
-To protect a certain variable, we can set them as read-only so that it can't be
+To protect a certain variable, we can set it as read-only so that it can't be
 changed or deleted.<br>
 So, if we try to change the value of VAR_1, the result will be the following:
 
@@ -86,7 +86,7 @@ VAR_1="Blueberry"
     VAR_1: This variable is read only.
 </pre>
 
-If we try to delete the variable, shell will give us the following value:
+If we try to delete the variable, the shell will give us the following error:
 
 <pre>
 VAR_1="Strawberry"

site/pages/scripts/2-special-variables.html

@@ -9,12 +9,12 @@ previous-page: pages/scripts/1-variables.html
 next-page: pages/scripts/3-parameter_expansion.html
 ---
 <!-- Intro -->
-There are certain strings that we can not use in the variable-naming process.<br>
+There are certain strings that we can't use in the variable-naming process.<br>
-In this page we will see what actually are those strings, and what's their purpose.<br>
+In this page we will see what those strings are, and what their purpose is.<br>
 
 <h4>$$</h4>
-To begin, we will see the simplest variable, which is the dollar sign ($).
+To begin, we look at the simplest variable, which is the dollar sign ($).
-This command simply gives us the process ID number of the current shell.<br>
+This command simply gives us the process ID of the current shell.<br>
 
 <pre>
 echo $$
@@ -22,7 +22,7 @@ echo $$
 </pre>
 
 <h4>$0</h4>
-This variable will simply give us the filename of the current script.
+This variable simply gives us the filename of the current script.
 
 <h4>$n</h4>
 This variable corresponds to the arguments with which a script was invoked.
@@ -32,4 +32,4 @@ Here n is a positive number corresponding to the position of an argument.
 This variable gives us the number of arguments supplied to a script.
 
 <h4>$!</h4>
-This variable gives us the process number of the last background command.
+This variable gives us the process ID of the last background command.

site/pages/scripts/5-for-loop.html

@@ -60,7 +60,7 @@ There are also other ways to specify the <i> numerical range </i>. For instance,
 your numerical range is too big, you can simply write: <code> {1..100} </code>. This piece
 of code means every natural number between 1 and 100 (both included). <br>
 Ranges can also count backward like this: <code>{10..1}</code>.
-You can even increment the numerical value by step of two: <code> {0..10..2} </code>.
+You can even increment the numerical value by steps of two: <code> {0..10..2} </code>.
-This piece of code means every natural number between 0 and 10 with a step of two,
+This piece of code means every natural number between 0 and 10 in steps of two;
 0 2 4 6... 10.
 <!-- End of Explanation of Numerical Range -->

site/pages/scripts/6-while-loop.html

@@ -31,7 +31,7 @@ done
 <!-- End of Introduction -->
 
 <!-- First Example -->
-Here is a first simple example:
+Here is a simple first example:
 {% highlight bash %}
 i=0;
 
@@ -80,8 +80,8 @@ do
 done
 {% endhighlight %}
 
-No termination condition is set for this loop in this example. This type of loop
+No termination condition is set for the loop in this example. This type of loop
-is called infinite loop.<br>
+is called an infinite loop.<br>
 The <code> exit</code> statement is used to quit the loop. This loop will
 iterate for 9 times, then
 as soon as <code> i</code> becomes equal to 0, the condition of the last if

site/pages/scripts/7-if.html

@@ -11,7 +11,7 @@ next-page: pages/scripts/8-redirection.html
 
 <!-- Introduction -->
 If statements allow us to make decisions in our Bash scripts. They allow us to
-whether run or not a piece of code based on a condition that we set. <br>
+decide whether or not to run a piece of code based on a condition that we set. <br>
 
 If statements take this form:
 {% highlight bash %}
@@ -39,7 +39,7 @@ In this first example we evaluate a variable <code>i</code> to 105.
 The <i> if statement </i> will print "You chose a big number"
 only if the number contained in our variable <code>i</code> is <b>G</b>reater or
 <b>E</b>qual to 200. <br>
-This is our case, therefore the output of this piece of code will be:
+This is the case, therefore the output of this piece of code will be:
 <pre>
   You chose a big number.
 </pre>
@@ -52,7 +52,7 @@ This is our case, therefore the output of this piece of code will be:
 Sometimes we want to perform a certain set of actions, if our condition evaluates to
 true and another set of actions if our condition evaluates to false. We can do this with
 the <i> if else </i> statement.
-<i> if else </i> sattements take this form:
+<i> if else </i> statements take this form:
 {% highlight bash %}
 if [condition]; then
     command1
@@ -78,10 +78,10 @@ else
 fi
 {% endhighlight %}
 
-In this example, that is just an extension of the previous example, we
+In this example, which is just an extension of the previous example, we
 evaluate a variable <code>i</code> to 50. If <code>i</code> is greater or equal to
-200, you print out "You chose a big number", otherwise,
+200, we print out "You chose a big number", otherwise,
-(if <code>i</code> is not greater or equal to 200), just like in this case, you print out
+(if <code>i</code> is not greater or equal to 200), just like in this case, we print out
 "You chose a small number".
 Therefore, the output of this piece of code is:
 
@@ -130,7 +130,7 @@ else
 fi
 {% endhighlight %}
 
-In this example, that is just an extension of the previous example, we evaluate a
+In this example, which is just an extension of the previous example, we evaluate a
 variable <code>i</code> to 150. If <code>i</code> is greater or equal to 200,
 you print out "You chose a big number", if <code>i</code> is equal to 150 you print out
 "You chose 150" otherwise you print out "You chose a small number".

site/pages/scripts/8-redirection.html

@@ -9,7 +9,7 @@ previous-page: pages/scripts/7-if.html
 ---
 <h3>output as input</h3>
 <br>
-To redirect a certain output of the command-line we have to use the symbol "&gt;".<br>
+To redirect the output of a command we use the symbol "&gt;".<br>
 
 In this case, we will use a file named <i>hello.txt</i>, in which we want to insert
 a certain output ("Sun" in this case):<br>
@@ -40,10 +40,10 @@ cat hello.txt
 <!-- Input redirection text -->
 <h3>input as output</h3>
 <br>
-To redirect an input from a file for a command, the symbol "&lt;" is used.
+To redirect input from a file for a command, the symbol "&lt;" is used.
 
 <pre>
-echo $lt; $(cat hello.txt)
+echo &lt; $(cat hello.txt)
     Sun
     Moon
 </pre>
@@ -54,7 +54,7 @@ This is particularly useful when chaining commands.<br>
 <h3>Chaining (or piping)</h3>
 
 Chaining, also called Piping because it works with the pipe symbol "|", takes
-the output of a certain command-line and feeds it to another command in a direct way.
+the output of a certain command and feeds it to another command.
 <pre>
 cat hello.txt | grep Mo
 Moon
@@ -63,7 +63,7 @@ Moon
 <h3>A simple example</h3>
 
 Now let's say that we want to combine those commands in a more complex operation.
-Let's say we want to take some contents from a certain file and put it into another file.<br>
+Let's say we want to take the content of a certain file and put it into another file.<br>
 
 We want to sort the animals whose name begins with letter "d" from the file
 <i>animals.txt</i> and put it into <i>d_animals.txt</i>.<br>