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Revision as of 01:41, 14 May 2015 by Christoph (New page: '''systemd''' is a suite of system management daemons, libraries, and utilities designed as a central management and configuration platform for the Linux computer operating system. ==Exam...)
systemd is a suite of system management daemons, libraries, and utilities designed as a central management and configuration platform for the Linux computer operating system.
$ systemctl list-units $ systemctl list-units -t service $ systemctl list-units | grep .service $ systemctl list-units -t target $ systemctl list-unit-files $ systemctl list-unit-files -t target $ systemctl list-dependencies multi-user.target $ systemctl [status|stop|enable|disable|restart] ssh.service $ systemctl is-enabled ssh.service $ systemctl [reboot|poweroff|suspend]
$ systemctl --failed UNIT LOAD ACTIVE SUB DESCRIPTION ● pollinate.service loaded failed failed Seed the pseudo random number generator on first boot ● vboxadd.service loaded failed failed LSB: VirtualBox Linux Additions kernel modules LOAD = Reflects whether the unit definition was properly loaded. ACTIVE = The high-level unit activation state, i.e. generalization of SUB. SUB = The low-level unit activation state, values depend on unit type.
Note: combine with syslog-ng for backward compatibility.
$ journalctl $ journalctl -b # show only logs from this boot $ journalctl -b -1 # show only logs from previous boot $ journalctl -u ssh # show only logs for a given unit $ journalctl |grep -Ei 'error|fail' $ journalctl -f # follow (somewhat analogous to `tail -f /var/log/messages`)