5.5 KiB
| layout | SPDX-License-Identifier |
|---|---|
| default | 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.
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See also
Welcome to Fedora 20 (Heisenbug)! [ OK ] Reached target Remote File Systems. [ OK ] Listening on Delayed Shutdown Socket. [ OK ] Listening on /dev/initctl Compatibility Named Pipe. [ OK ] Reached target Paths. [ OK ] Reached target Encrypted Volumes. [ OK ] Listening on Journal Socket. Mounting Huge Pages File System... Mounting POSIX Message Queue File System... Mounting Debug File System... Starting Journal Service... [ OK ] Started Journal Service. Mounting Configuration File System... Mounting FUSE Control File System... [ OK ] Created slice Root Slice. [ OK ] Created slice User and Session Slice. [ OK ] Created slice System Slice. [ OK ] Reached target Slices. [ OK ] Reached target Swap. Mounting Temporary Directory... [ OK ] Reached target Local File Systems (Pre). Starting Load Random Seed... Starting Load/Save Random Seed... [ OK ] Mounted Huge Pages File System. [ OK ] Mounted POSIX Message Queue File System. [ OK ] Mounted Debug File System. [ OK ] Mounted Configuration File System. [ OK ] Mounted FUSE Control File System. [ OK ] Mounted Temporary Directory. [ OK ] Started Load Random Seed. [ OK ] Started Load/Save Random Seed. [ OK ] Reached target Local File Systems. Starting Recreate Volatile Files and Directories... Starting Trigger Flushing of Journal to Persistent Storage... [ OK ] Started Recreate Volatile Files and Directories. Starting Record System Reboot/Shutdown in UTMP... [ OK ] Started Trigger Flushing of Journal to Persistent Storage. [ OK ] Started Record System Reboot/Shutdown in UTMP. [ OK ] Reached target System Initialization. [ OK ] Reached target Timers. [ OK ] Listening on D-Bus System Message Bus Socket. [ OK ] Reached target Sockets. [ OK ] Reached target Basic System. Starting Permit User Sessions... Starting D-Bus System Message Bus... [ OK ] Started D-Bus System Message Bus. Starting Login Service... Starting Cleanup of Temporary Directories... [ OK ] Started Permit User Sessions. [ OK ] Started Cleanup of Temporary Directories. Starting Console Getty... [ OK ] Started Console Getty. [ OK ] Reached target Login Prompts. [ OK ] Started Login Service. [ OK ] Reached target Multi-User System. Fedora release 20 (Heisenbug) Kernel 3.9.2-200.fc18.x86_64 on an x86_64 (console) fedora login: