Linux查看系统开机和关机时间

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 [root@test ~]# who -b         system boot  2017-02-04 10:09 [root@test ~]# who -r         run-level 5  2017-02-04 10:09 2、查看系统运行了多长时间[root@test ~]# toptop – 10:46:41 up 37 min,  2 users,  load average: 0.00, 0.00, 0.00Tasks: 151 total,   1 running, 150 sleeping,   0 stopped,   0 zombieCpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%stMem:   4151492k total,   199068k used,  3952424k free,    19044k buffersSwap:  4161528k total,        0k used,  4161528k free,    91036k cached  [root@test ~]# w 10:49:57 up 40 min,  2 users,  load average: 0.00, 0.00, 0.00USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHATroot     pts/0    192.168.52.1     10:35   11:03   0.03s  0.00s man whoroot     pts/1    192.168.52.1     10:39    0.00s  0.02s  0.00s w [root@test ~]# uptime 10:50:50 up 41 min,  2 users,  load average: 0.00, 0.00, 0.00  3、查看linux系统关机的时间 last -x |grep shutdown last -x |grep shutdown |head -1  [root@test ~]# last -x |grep shutdownshutdown system down  2.6.32-431.el6.i Wed Jan  4 16:34 – 10:09 (30+17:34) shutdown system down  2.6.32-431.el6.i Tue Jan  3 16:24 – 16:23  (23:59)   shutdown system down  2.6.32-431.el6.i Wed Dec 21 16:02 – 15:20 (12+23:17) shutdown system down  2.6.32-431.el6.i Mon Nov 28 22:28 – 14:14 (22+15:46) shutdown system down  2.6.32-431.el6.i Tue Nov 29 06:00 – 06:01  (00:00)   shutdown system down  2.6.32-431.el6.i Tue Nov 29 05:43 – 05:43  (00:00)  [root@test ~]# last -x |grep shutdown |head -1shutdown system down  2.6.32-431.el6.i Wed Jan  4 16:34 – 10:09 (30+17:34)