Convert any Date format in unix  view story
http://unix.stackexchange.com – How can I convert any user
inputted date into yyyy/mm/dd? For example user can input date
in one of the following formats 20120121 , 2012-01-21,
01/21/2012, 01/21/2012 etc. But I need to convert any of the
date entered by user into yyyy/mm/dd (2012/01/2012). How? This
is the script I was using , but it is not working. echo "Please
enter the date: " read X a=$X+"%y/%m/%d" echo $a (HowTos)