How to Set Linux Timezone to CST (Asia/Shanghai) Using timedatectl and Manual Methods

In Linux, you can change the system timezone to CST (China Standard Time, GMT+8, also known as Asia/Shanghai) by following the steps below.

Method 1: Use timedatectl (recommended for most modern distributions)

Check the current timezone: timedatectl The output shows fields such as Local time, Universal time, RTC time and Time zone (e.g., Asia/Shanghai ).

List available timezones containing Shanghai: timedatectl list-timezones | grep Shanghai The result should include Asia/Shanghai .

Set the timezone to CST (Asia/Shanghai): sudo timedatectl set-timezone Asia/Shanghai Verify the change: timedatectl The output should display Time zone: Asia/Shanghai (CST, +0800) .

Method 2: Manually link /etc/localtime

Backup the existing timezone configuration: sudo mv /etc/localtime /etc/localtime.bak Create a symbolic link to the CST timezone file:

sudo ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

Validate the change: date The output should show the current time in CST (GMT+8).

Method 3: Set the TZ environment variable (temporary effect)

If you only need a temporary adjustment, set the TZ variable in the current session: export TZ="Asia/Shanghai" Then verify with: date Note: This method only affects the current shell session; it is lost after a reboot or when opening a new terminal.

Important Considerations

Using timedatectl is the recommended approach for modern Linux distributions.

Ensure your system clock (UTC) is correct; the timezone setting only changes how the time is displayed.

The /etc/localtime linking method is useful for older Linux versions that do not support timedatectl.