37. Finally, Some Other Useful (I Hope!) Examples

• We want to secure a RH Linux box, and we want to find all the pesky 'r-something' utilities:

    rpm -q -a | grep '^r'
          

• We want to fix the indenting in or out in vi, after selecting the appropriate rows with visual mode (i.e. use the 'v' key):

    :s/^/  /
    :s/^  //
          

• We want to get rid of those pesky ^M characters from DOS:

    :%s/^V^M//
          

  (The ctrl-v tells the shell that the ctrl-m is a literal, so you end up seeing just:

    :%s/^M//
          

  on screen!)