Linux - How to find server downtime, Find last system reboot

How to find server downtime

To find all system reboot date and time

 # last reboot | less

find last five system reboot

 # last reboot | head -5

To find last shutdown date and time

 # last -x | grep shutdown | head -5

Who command to find last system boot time

 # who -b

who command, to print who is logged on. It also displays the time of last system boot. Use last command to display system reboot and shutdown date and time.

TO find last system downtime status

 # grep -i 'boot' /var/log/messages

There is no specific command to find downtime status, You can find the shutdown and reboot date and time using linux last command. But to find the system down time status you can analyse the system log report. The above command will help you find the approximate server down time.

OUTPUT

Nov 14 08:53:29 servername shutdown: shutting down for system reboot
Nov 14 08:54:42 servername kernel: Booting processor
Nov 14 08:54:42 servername kernel: Simple Boot Flag at 0xxx set to 0xxx

How to execute previous command

 # Control+P will display the previous command

The topic on Linux - How to find server downtime is posted by - Math

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