Lab 11

1. The date command can format its output anyway you specify.
   Some of the specifications are:
   • %Y the year
   • %m the month
   • %d the day
   • so date "%Y.%m.%d" would yield
     2005.06.14
2. Create and run a script called s3 that will accept as the first argumnet a file name. The script will then create a backup copy of the file name with the date appended to it. like:

   $ ./s3 s3
   copied s3 to s3.2005.06.14
   

3. email me both the script and an ls of the file you copied.