系统和服务管理器#
systemd是一套用于Linux系统的基本构建模块。它提供了一个系统和服务管理器，以PID 1运行，并启动系统的其他部分。
systemd提供积极的并行化能力，使用套接字和D-Bus激活来启动服务，支持按需启动守护进程，利用Linux控制组跟踪进程，维护挂载和自动挂载点，并实现了复杂的基于事务的依赖服务控制逻辑。
其他部分包括一个日志守护进程、用于控制基本系统配置的工具，如主机名、日期、语言环境，维护已登录用户和运行中的容器及虚拟机的列表、系统账户、运行目录和设置，以及用于管理简单网络配置、网络时间同步、日志转发和名称解析的守护进程。
启动#
更多#
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: