fs: added mkdir page

git-svn-id: svn+ssh://atelier.inf.usi.ch/home/bevilj/group-1@125 a672b425-5310-4d7a-af5c-997e18724b81

site/pages/fs/mkdir.html

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+---
+layout: page
+category_title: file system
+category-page: navigation
+tags: lS
+author: Mirko Ponzio
+title: PWD
+---
+
+<h1> MKDIR , make directories </h1>
+
+<h2> what is mkdir </h2>
+<p>
+The mkdir utility creates the directories named as operands, in the order specified, using mode rwxrwxrwx (0777) as modified by the current
+umask(2). </p>
+
+<h2> options </h2>
+<p>
+     -m mode
+
+Set the file permission bits of the final created directory to the specified mode.
+The mode argument can be in any of the formats specified to the chmod(1) command.
+If a symbolic mode is specified, the operation characters ``+'' and ``-'' are interpreted relative to an initial mode of ``a=rwx''.
+
+     -p
+
+Create intermediate directories as required.  If this option is not specified, the full path prefix of each operand must already exist.
+On the other hand, with this option specified, no error will be reported if a directory given as an operand already exists.
+Intermediate directories are created with permission bits of rwxrwxrwx (0777) as modified by the current umask, plus write and search permission for the owner.
+
+     -v
+
+Be verbose when creating directories, listing them as they are created.
+
+The user must have write permission in the parent directory.
+</p>
+
+
+<h2> syntax </h2>
+<p>
+mkdir [-pv] [-m mode] directory_name ...
+</p>