How Linux modifies system times and time zones

To modify a time zone:

1>

Find the appropriate time zone file/usr/share/zoneinfo/asia/shanghai

Replace the current/etc/localtime file with this file.

Or find the server you think is Standard time, and then

#scp Root@xxx.xxx.xxx.xxx:/etc/localtime/etc/localtime

2>

Modify the/etc/sysconfig/clock file and modify it to:

Zone= "Asia/shanghai"

Utc=false

Arc=false

Modified Date Time:

1>

Modify Date Time with date

#date-S 08/24/2006

#date-S 13:02:00

2>

Synchronizing the BIOS clock, forcing the system time to be written to the CMOS

#clock-W

Also, view Bois time with #hwclock-R

#tzselect can modify the time zone interactively

Linux Modify system time zone

1. View the current time zone

# Vi/etc/sysconfig/clock

2. Modify Settings Time zone

Method (1) # Tzselect Method (2 is limited to Redhat Linux and CentOS) # Timeconfig

3. Copy the appropriate time zone file, replace the system default time zone

# cp/usr/share/zoneinfo/$ main time zone/$ time zone/etc/localtime for Chinese server: # cp/usr/share/zoneinfo/asia/shanghai/etc/localtime

4. Write the current time to the BIOS for permanent entry (avoid failure after reboot)

# Hwclock