---
layout: default
+SPDX-License-Identifier: LGPL-2.1-or-later
---
+# System and Service Manager
+
systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as PID 1 and starts the rest of the system.
-
-systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. systemd supports SysV and LSB init scripts and works as a replacement for sysvinit.
-Other parts include a logging daemon, utilities to control basic system configuration like the hostname, date, locale, maintain a list of logged-in users and running containers and virtual machines, system accounts, runtime directories and settings, and daemons to manage simple network configuration, network time synchronization, log forwarding, and name resolution.
+systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. systemd supports SysV and LSB init scripts and works as a replacement for sysvinit.
-See the introductory blog story and three status updates for a longer introduction. Also see the [Wikipedia article](https://en.wikipedia.org/wiki/systemd).
+Other parts include a logging daemon, utilities to control basic system configuration like the hostname, date, locale, maintain a list of logged-in users and running containers and virtual machines, system accounts, runtime directories and settings, and daemons to manage simple network configuration, network time synchronization, log forwarding, and name resolution.
---
{% endif %}
{% endfor %}
+## See also
+
+* [Introductory blog story](https://0pointer.de/blog/projects/systemd.html)
+* [Three](https://0pointer.de/blog/projects/systemd-update.html) [status](https://0pointer.de/blog/projects/systemd-update-2.html) [updates](https://0pointer.de/blog/projects/systemd-update-3.html)
+* The [Wikipedia article](https://en.wikipedia.org/wiki/systemd)
+
+---
+
+<pre class="intro-code-block">
+Welcome to <span class="color-blue">Fedora 20 (Heisenbug)</span>!
+
+[ <span class="color-green">OK</span> ] Reached target Remote File Systems.
+[ <span class="color-green">OK</span> ] Listening on Delayed Shutdown Socket.
+[ <span class="color-green">OK</span> ] Listening on /dev/initctl Compatibility Named Pipe.
+[ <span class="color-green">OK</span> ] Reached target Paths.
+[ <span class="color-green">OK</span> ] Reached target Encrypted Volumes.
+[ <span class="color-green">OK</span> ] Listening on Journal Socket.
+ Mounting Huge Pages File System...
+ Mounting POSIX Message Queue File System...
+ Mounting Debug File System...
+ Starting Journal Service...
+[ <span class="color-green">OK</span> ] Started Journal Service.
+ Mounting Configuration File System...
+ Mounting FUSE Control File System...
+[ <span class="color-green">OK</span> ] Created slice Root Slice.
+[ <span class="color-green">OK</span> ] Created slice User and Session Slice.
+[ <span class="color-green">OK</span> ] Created slice System Slice.
+[ <span class="color-green">OK</span> ] Reached target Slices.
+[ <span class="color-green">OK</span> ] Reached target Swap.
+ Mounting Temporary Directory...
+[ <span class="color-green">OK</span> ] Reached target Local File Systems (Pre).
+ Starting Load Random Seed...
+ Starting Load/Save Random Seed...
+[ <span class="color-green">OK</span> ] Mounted Huge Pages File System.
+[ <span class="color-green">OK</span> ] Mounted POSIX Message Queue File System.
+[ <span class="color-green">OK</span> ] Mounted Debug File System.
+[ <span class="color-green">OK</span> ] Mounted Configuration File System.
+[ <span class="color-green">OK</span> ] Mounted FUSE Control File System.
+[ <span class="color-green">OK</span> ] Mounted Temporary Directory.
+[ <span class="color-green">OK</span> ] Started Load Random Seed.
+[ <span class="color-green">OK</span> ] Started Load/Save Random Seed.
+[ <span class="color-green">OK</span> ] Reached target Local File Systems.
+ Starting Recreate Volatile Files and Directories...
+ Starting Trigger Flushing of Journal to Persistent Storage...
+[ <span class="color-green">OK</span> ] Started Recreate Volatile Files and Directories.
+ Starting Record System Reboot/Shutdown in UTMP...
+[ <span class="color-green">OK</span> ] Started Trigger Flushing of Journal to Persistent Storage.
+[ <span class="color-green">OK</span> ] Started Record System Reboot/Shutdown in UTMP.
+[ <span class="color-green">OK</span> ] Reached target System Initialization.
+[ <span class="color-green">OK</span> ] Reached target Timers.
+[ <span class="color-green">OK</span> ] Listening on D-Bus System Message Bus Socket.
+[ <span class="color-green">OK</span> ] Reached target Sockets.
+[ <span class="color-green">OK</span> ] Reached target Basic System.
+ Starting Permit User Sessions...
+ Starting D-Bus System Message Bus...
+[ <span class="color-green">OK</span> ] Started D-Bus System Message Bus.
+ Starting Login Service...
+ Starting Cleanup of Temporary Directories...
+[ <span class="color-green">OK</span> ] Started Permit User Sessions.
+[ <span class="color-green">OK</span> ] Started Cleanup of Temporary Directories.
+ Starting Console Getty...
+[ <span class="color-green">OK</span> ] Started Console Getty.
+[ <span class="color-green">OK</span> ] Reached target Login Prompts.
+[ <span class="color-green">OK</span> ] Started Login Service.
+[ <span class="color-green">OK</span> ] Reached target Multi-User System.
+
+Fedora release 20 (Heisenbug)
+Kernel 3.9.2-200.fc18.x86_64 on an x86_64 (console)
+
+fedora login:
+</pre>
projects / thirdparty / systemd.git / blobdiff