Thứ Hai, 6 tháng 5, 2013

How to Change the Timezone in Linux

Change the Timezone in Linux

Most modern Linux distributions have user-friendly programs to set the timezone, often accessible through the program menus or right-clicking the clock in a desktop environment such as KDE or GNOME. Failing that it's possible to manually change the system timezone in Linux in a few short steps.

  1. 1

    For ubuntu[1]


  2. 2

    Logged in as root, check which timezone your machine is currently using by executing `date`. You'll see something like Mon 17 Jan 2005 12:15:08 PM PST, PST in this case is the current timezone.

  3. 3

    Change to the directory /usr/share/zoneinfo here you will find a list of time zone regions. Choose the most appropriate region, if you live in Canada or the US this directory is the "America" directory.

  4. 4

    If you wish, backup the previous timezone configuration by copying it to a different location. Such as
    mv /etc/localtime  /etc/localtime-old

  5. 5

    Create a symbolic link to the appropriate timezone from /etc/localtime. Example:
    ln -sf /usr/share/zoneinfo/Europe/Amsterdam /etc/localtime 


  6. 6

    If you have the utility rdate, update the current system time by executing
    /usr/bin/rdate -s



  7. 7

    Set the ZONE entry in the file /etc/sysconfig/clock file (e.g. "America/Los_Angeles")


  8. 8

    Set the hardware clock by executing:
    /sbin/hwclock --systohc


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