Tech Newbie: Random scripts : Linux

1. setup a simple reminder to appear on your screen at a specific time

   $ echo 'xmessage "Hello"'|at 19:00

2. Its easy to move multiple files at once based on some criteria.

    But moving all files except one is quit difficult. Here is a small combination

    of commands which will enable you to do so.

Let your directory contains 4 files

to remove all but test4.txt, use below command ( -v flag with grep command)

   $ rm `ls | grep -v 4\.txt`

result is -

3. Get an excuse in one command


   $ echo `telnet bofh.jeffballard.us 666 2>/dev/null` |grep --color -o "Your excuse is:.*$"

 4. Generate 8 letter random password

      $ egrep -ioam1 '[a-z0-9]{8}' /dev/urandom

5. Creating multiple files or directories

  $ touch test{1,2,3,4,5}.txt

  $ mkdir  test{1,2,3,4,5}

More to come soon... Happy learning.

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Tech Newbie