查看Linux开机时间/重启时间_命令

Posted 2020-11-18 笃行之

查看Linux开机时间/重启时间
1. who 命令查看
who -b 查看最后一次系统启动的时间。
who -r 查看当前系统运行时间

[[email protected] ~]# who -b
system boot 2018-06-16 04:23

2.last reboot
[[email protected] ~]# last reboot
reboot system boot 2.6.32-431.11.25 Sat Jun 16 04:23 - 10:46 (1+06:23)
reboot system boot 2.6.32-431.11.25 Thu Feb 1 01:49 - 10:46 (136+08:56)
reboot system boot 2.6.32-431.11.25 Wed Jan 3 14:25 - 01:48 (28+11:23)

3.TOP命令查看
up后表示系统到目前运行了多久时间。反过来推算系统重启时间

4.w命令查看
[[email protected] ~]# w
10:48:05 up 1 day, 6:25, 1 user, load average: 0.13, 0.06, 0.01
USER TTY FROM [email protected] IDLE JCPU PCPU WHAT
root pts/0 10.10.232.92 10:37 0.00s 0.01s 0.00s w

5.uptime 命令查看
[[email protected] ~]# uptime
10:48:28 up 1 day, 6:25, 1 user, load average: 0.09, 0.06, 0.01

6.查看/proc/uptime
[[email protected] ~]# cat /proc/uptime
1415.59 1401.42
[[email protected] ~]# date -d "`cut -f1 -d. /proc/uptime` seconds ago"
Thu May 29 15:24:57 CST 2014
[[email protected] ~]# date -d "$(awk -F. ‘{print $1}‘ /proc/uptime) second ago" +"%Y-%m-%d %H:%M:%S"
2014-05-29 15:24:57