Using Date Command
%date - This command prints current system date and time on the screen.
e.g.
Sat Apr 8 11:22:44 IST 2006
%date -d IST - gives display time described by STRING, not 'now'.
%date -f filename - gives date and time described by each line in file 'filename'.
%date -r filename - gives last modification time of that file 'filename'.
%date -u - gives Coordinated Universal Time.
