How To Configure Timezone on SLES Linux
Posted by Planet Malaysia on May 9, 2008
The following tutorial will guide you How to configure TIMEZONE on SLES Linux.
Basically you can configure Linux timezone using two methods which is using command or YaST.
Note: use timezone “GMT+0“ for an example below.
For YaST timezone setup, it’s pretty simple. Login to terminal and type:
#YasT Setup
yast timezone
Select Global, select GMT+0
Hardware clock Set To: Localtime
Click Accept.
For command line setup, you’re require to know these 2 files /etc/localtime and /etc/sysconfig/clock.
#Backup existing file
mv /etc/localtime /etc/localtime.old cp /etc/sysconfig/clock /etc/sysconfig/clock.old
#Edit configuration files
ln -s /usr/share/zoneinfo/GMT+0 /etc/localtimevi /etc/sysconfig/clock TIMEZONE=GMT+0 HWCLOCK="--localtime"
Bear in mind, you can have different timezone setup for individual or global user by using user profile in your system. For an example,
#Edit configuration file
vi /etc/profile or ~username/.bash_profile export TZ=/usr/share/zoneinfo/Asia/Kuala_Lumpur
Export “TZ” will overwrite /etc/sysconfig/clock or /etc/localtime setup. Mean that I can use Kuala Lumpur as my separate time zone for particular user in the same system eventhrough my primary timezone setup is GMT+0.
NTP setup
#Edit NTP configuration file
vi /etc/ntp.confserver 0.europe.pool.ntp.org server 1.europe.pool.ntp.org server 2.europe.pool.ntp.org server 3.europe.pool.ntp.org server your.ntp.server
#Restart NTP Server
rcxntpd xntpd restart
Hardware Clock
#showing hardware clock
hwclock --show
#set the system time from the hardware clock
hwclock --hctosys
#set the hardware clock from the system time
hwclock --systohc
Done!
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