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Yurij
Asked: 2017-12-06 22:09:46 +0800 CST

How to interpret results of `last reboot` command?

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I was supposed to left my device always on since Monday

last reboot

give me 

 reboot   system boot  4.4.0-98-generic Wed Dec  6 08:52   still running
 reboot   system boot  4.4.0-98-generic Mon Dec  4 09:40 - 18:12 (1+08:31)

is it correct?

boot

1 Answers

  1. Best Answer

    See man last:

    last searches back through the /var/log/wtmp file (or the file designated by the -f option) and displays a list of all users logged in (and out) since that file was created. One or more usernames and/or ttys can be given, in which case last will show only the entries matching those arguments. Names of ttys can be abbreviated, thus last 0 is the same as last tty0.

    For your command last reboot:

    The pseudo user reboot logs in each time the system is rebooted. Thus last reboot will show a log of all the reboots since the log file was created.

    Shows you number of reboots the system went through, and reboot and shutdown are pseudo-users for system reboot and shutdown, respectively.

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