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---
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layout: default
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SPDX-License-Identifier: LGPL-2.1-or-later
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---
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# System and Service Manager
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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.
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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.
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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.
---
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{% assign by_category = site.pages | group_by:"category" %}
{% assign extra_pages = site.data.extra_pages | group_by:"category" %}
{% assign merged = by_category | concat: extra_pages | sort:"name" %}
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{% for pair in merged %}
{% if pair.name != "" %}
## {{ pair.name }}
{% assign sorted = pair.items | sort:"title" %}{% for page in sorted %}
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* [{{ page.title }} ]({{ page.url | relative_url }} ){% endfor %}
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{% endif %}
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{% endfor %}
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## See also
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* [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 )
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* The [Wikipedia article ](https://en.wikipedia.org/wiki/systemd )
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---
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< pre class = "intro-code-block" >
Welcome to < span class = "color-blue" > Fedora 20 (Heisenbug)< / span > !
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[ < 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.
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Mounting Huge Pages File System...
Mounting POSIX Message Queue File System...
Mounting Debug File System...
Starting Journal Service...
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[ < span class = "color-green" > OK< / span > ] Started Journal Service.
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Mounting Configuration File System...
Mounting FUSE Control File System...
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[ < 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.
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Mounting Temporary Directory...
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[ < span class = "color-green" > OK< / span > ] Reached target Local File Systems (Pre).
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Starting Load Random Seed...
Starting Load/Save Random Seed...
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[ < 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.
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Starting Recreate Volatile Files and Directories...
Starting Trigger Flushing of Journal to Persistent Storage...
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[ < span class = "color-green" > OK< / span > ] Started Recreate Volatile Files and Directories.
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Starting Record System Reboot/Shutdown in UTMP...
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[ < 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.
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Starting Permit User Sessions...
Starting D-Bus System Message Bus...
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[ < span class = "color-green" > OK< / span > ] Started D-Bus System Message Bus.
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Starting Login Service...
Starting Cleanup of Temporary Directories...
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[ < span class = "color-green" > OK< / span > ] Started Permit User Sessions.
[ < span class = "color-green" > OK< / span > ] Started Cleanup of Temporary Directories.
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Starting Console Getty...
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[ < 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.
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Fedora release 20 (Heisenbug)
Kernel 3.9.2-200.fc18.x86_64 on an x86_64 (console)
fedora login:
< / pre >