Permission and Ownership using awk
  Awk programming     The easiest way to learn the awk command usage is to see them in action.     In order to find the working directory we are in .   Type pwd ( "print working directory" )           Then type ls ( listing)for listing to see what's in the current directory   $ ls       Permissions and Ownership  List directories and files  ls -al  # shows something like this for each file/dir: drwxrwxrwx    # d: directory    # rwx: read write execute    # first triplet: user permissions (u)    # second triplet: group permissions (g)    # third triplet: world permissions (o)        It shows like this  when we type     $ls -al     drwxr-xr-x  2 prakash prakash    4096 Oct 27 03:56 Videos  drwxr-xr-x  2 prakash prakash    4096 Nov 18 10:19 .vim -rw-------  1 prakash prakash   11158 Dec 16 18:54 .viminfo -rw-------  1 prakash prakash     124 Dec 16 18:11 .Xauthority -rw-------  1 prakash prakash      82 Dec 16 18:11 .xsession-errors   Assign write and execute permission...