TimeZone change (Permanent without reboot) on RedHat Linux 5.7.

Today I would like to share Time Zone chane on RHEL 5.7 - Simple
But need to have the info on time & quick. Four commnds! :-)

cd /etc
rm localtime
ln -s /usr/share/zoneinfo/America/New_York localtime
date

Thats it!

Thanks.