Set Date, Time, Time Zone Change from Command Line in Linux

Set Date, Time, Time Zone Change from Command Line in Linux

 

In this article we will set Linux time, set date, hardware clock, change timezone from command line.

 

Linux Current Date And Time

Get current date and time:

# date

Output:

Fri Feb 8 16:59:38 PST 2019

 

Set date from the command line:

# date +%Y%m%d -s "20190208"

Set time from the command line

# date +%T -s "09:21:34"

Set time and date from the command line:

# date -s "08 FEB 2019 05:23:34"

 

Set Hardware Clock

hwclock is a tool for accessing the Hardware Clock. You can display the current time, set the Hardware Clock to a specified time, set the Hardware Clock from the System Time, or set the System Time from the Hardware Clock

Show differences between hardware clock and system clock:

hwclock --show

Example output:

Mon 11 Feb 2019 11:52:16 AM PST -0.375700 seconds

To set the hardware clock to local time:

hwclock --set --date="2019-03-11 15:12:34" --localtime

 

Linux Change Timezone

To set or change timezone system clock of your system you need change localtime. For example set local time to Los Angeles:

# cp /usr/share/zoneinfo/America/Los_Angeles /etc/localtime

 

Linux NTP Sync, Public NTP Server

For synchronize Linux time over network with time servers install ntpdate utility:

for CentOS:

# yum install ntpdate

for Debian systems:

# apt-get update
# apt-get install ntpdate

Update time over Internet with public NTP server 0.pool.ntp.org. In your case you can use other public NTP servers:

# ntpdate 0.pool.ntp.org

Example output:

11 Feb 12:20:23 ntpdate[11536]: adjust time server 81.7.16.52 offset 0.000574 sec

 

arstech

Leave a Reply

Your email address will not be published. Required fields are marked *