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Show uptime and recent reboots

harmlessSystem and hardwaredebian, ubuntu
Adjust the values, the command updates live
user@server
uptime -p && last reboot | head -n 10

The first line gives the uptime in words, for example up 3 weeks, 2 days. Below it follow the most recent boots from /var/log/wtmp with kernel version and time span. A boot without a preceding clean shutdown points to a power failure, a crash or a restart by the hosting provider.

Note: The list only goes back as far as logrotate keeps wtmp. The cause of a crash can often be found with journalctl -b -1.

Also searched as

  • when was the server rebooted
  • how long has the server been up
  • unexpected reboot linux

Related one-liners

All in System and hardware

Check whether a reboot is required after updates

$if [ -f /var/run/reboot-required ]; then cat /var/run/reboot-required.pkgs; else echo "Kein Neustart vermerkt"; fi
harmlessDebian and APT

Compare load average with the number of CPU cores

$uptime && nproc
harmlessProcesses

Show recent server logins with IP address

$last -i | head -30
harmlessSecurity

Change swappiness at runtime

#sysctl vm.swappiness=10
cautionSystem and hardware

Check health and wear of an NVMe SSD

#nvme smart-log /dev/nvme0
harmlessSystem and hardware

Check system time, time zone and NTP sync

$timedatectl
harmlessSystem and hardware

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