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This article will explain in detail how to check the system time on linux. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

The method to check the system time: 1, execute the "date" command; 2, execute the "uptime" command; 3, execute the "w" command; 4, execute the "who" command; 5, execute the "last root-F | head-1 | awk'{print $4, 5, 5, 5, 5, 5, 5, 5, 5, 4, 5, 5, 7, 7, 8}'" commands.

The operating environment of this tutorial: CentOS 6 system, Dell G3 computer.

1 、 date

This is the most classic command for the system to view time, and it is also the life that scripts often use to define time.

[root@localhost ~] $dateFri Jan 25 14:17:17 CST 2019

2 、 uptime

[root@localhost] # uptime16:51:24 up 13:02, 1 user, load average: 0.00,0.01,0.05

The first data of this command is the current time of the system, the second is the running time of the system, and the third is the average of the system load in the past 1 minute, 5 minutes and 15 minutes after the number of logged in users of the system.

3 、 w

Up 1983 days, 13:05, 2 users, load average: 26.45,27.76, 27.72USER TTY FROM LOGIN@ IDLE JCPU PCPU WHATgdmm81 pts/0 10.153.97.38 14:09 23.00s 0.36s 0.01s sshd: gdmm81 [priv] dwtangmi pts/3 10.153.97.56 17:18 0.00s 0.07s 0.01s sshd: dwtangmingqi [priv]

The W command note is to look at the currently logged-in users of the system, what each user is doing, and the impact of all active loads on the computer. This command combines the results of uptime, who, and ps-a

Of course, there are other options for this command. You can study the ways to use it sometime.

W commands the first column, which is the same as uptime.

The second column of the w command is the current logged in user of the system

User: login user name

TTY: the terminal number assigned by the system after login

From: remote hostname, that is, where you logged in

When will login@: log in

IDLE: user idle time. This is a timer, and once the user performs any action, the change timer is reset.

JCPU: all processes connected to the terminal take time. Including the time occupied by currently running background jobs

PCPU: time spent by the current process

WHAT: the command line of the currently running process

4 、 who

[modps@gd-mopps02] $whogdmm81 pts/0 2019-01-18 14:09 (10.153.97.38) dwtangmingqi pts/3 2019-01-18 17:18 (10.153.97.56)

The who command is somewhat similar to the w command, and my command contains more information.

5 、 last

Last lists users who have recently logged in to the system

[root@localhost ~] # last root-F | head-1 | awk'{print $4, "5 laws, 7" 8 "Fri Jan 18 14:55:52 2019, this is the end of the article on" how to check system time in linux ". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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