How to set timezone in linux... really... this method works!

#How to set timezone in linux... really... this method works!
#/KNOPPIX/knoppix.sh

#set "localtime" timezone
#remove original "timezone link"
rm -f /etc/localtime
#create link from your preferred timezone file to "timezone link" example:
ln -s /usr/share/zoneinfo/Europe/Budapest /etc/localtime

# setup for EDT and EST (+4 EDT; +5 EST)
#ln -s /usr/share/zoneinfo/EST5EDT /etc/localtime

# setup for only EST (+5 EST)
#ln -s /usr/share/zoneinfo/EST /etc/localtime

# setup for only Daylight Saving Time
#ln -s /usr/share/zoneinfo/EDT /etc/localtime

#...

#here is how to set "timezone environment variable" in a terminal to GMT for example
# (console GMT, x budapest time)
#echo '"TZ=GMT"; export TZ;' > /home/knoppix/.profile
#echo '"TZ=GMT"; export TZ;' > /root/.profile

#setting "systemwide timezone" (budapest time, hwclock GMT) (this sets the time in xorg too if you do this before starting x server!)
rm /etc/timezone

echo "Europe/Budapest" > /etc/timezone
export TZ="/usr/share/zoneinfo/Europe/Budapest"

# setup local timezone "US/Eastern" - "America/New_York"
echo "US/Eastern" > /etc/timezone
export TZ="/usr/share/zoneinfo/America/New_York"


#now set your hardware clock preferably to GMT time...
#set gmt time and date with example:
#date -u --set "2014-08-24 03:18:00+00"
#Sun Aug 24 03:18:00 UTC 2014

#show local time
#root@Microknoppix:/media/sda2/KNOPPIX# date
#Sun Aug 24 05:19:50 CEST 2014
#show gmt time
#root@Microknoppix:/media/sda2/KNOPPIX# date -u
#Sun Aug 24 03:19:53 UTC 2014

#you can use the tzselect tool for selection of timezone in a script
#tzselect

#synchronize hw clock
#hwclock --hctosys