Difference between revisions of "Redhat7:date"
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| − | == timedatectl command == | + | == <tt>timedatectl</tt> command == |
As with the other ctl command the timedateclt works in a similar way. | As with the other ctl command the timedateclt works in a similar way. | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
| − | == date command == | + | == <tt>date</tt> command == |
<syntaxhighlight> | <syntaxhighlight> | ||
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date +%T -s HH:MM:SS | date +%T -s HH:MM:SS | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| + | |||
| + | == <tt>hwclock</tt> command == | ||
Revision as of 09:52, 23 February 2015
Types of Clocks
There are two separate clocks on a system, and most modern OS's distinguish between them.
- Real-Time Clock - Also know as the hardware clock, this clock runs independently of the OS, and continues even when the system is shotdown
- System Clock - Maintained by the kernel of the OS. This can be set to use Univerisal Time (UTC) or the local time. It is recommended to us UTC.
timedatectl command
As with the other ctl command the timedateclt works in a similar way.
#Display current time and date
timedatectl
#set date
timedatectl set-time YYYY-MM-DD
#set time
timedatectl set-time HH:MM:SS
# set time zone
timedatectl list-timezones
timedatectl set-timezone time_zone
# Synchronise using ntp
timedatectl set-ntp booleandate command
#Display current time and date
date --utc
#set date
date +%F -s YYYY-MM-DD
#set time
date +%T -s HH:MM:SS