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systemctl 学习笔记
systemctl 快速入门
systemctl 用来取代旧的 service 和 chkconfig 命令。
几个主要路径：
/etc/systemd/system.conf/usr/lib/systemd/system/PRM 安装的 systemd unit 文件/run/systemd/system/Systemd 运行时创建的文件/etc/systemd/system/由systemctl enable创建的文件
Systemd unit 文件类型：
.service.target一组 systemd units.socket
在使用 systemctl 命令时，默认是 .service 后缀的文件，以下两个命令等效：
$ sudo systemctl start httpd.service
$ sudo systemctl start httpd
用 systemctl 替代 service
对比过时的 service 系列命令:
| service 命令 | systemctl 命名 |
|---|---|
service name start |
systemctl start name.service |
service name stop |
systemctl stop name.service |
service name restart |
systemctl restart name.service |
service name condrestart |
systemctl try-restart name.service (Restarts a service only if it’s running) |
service name reload |
systemctl reload name.service (Reloads configure) |
service name status |
systemctl status name.service systemctl is-active name.service |
service --status-all |
systemctl list-units --type service --all |
用 systemctl 替代 chkconfig
对比过时的 chkconfig 系列命名：
| chkconfig 命令 | systemctl 命名 |
|---|---|
chkconfig name on |
systemctl enable name.service |
chkconfig name off |
systemctl disable name.service |
chkconfig --list name |
systemctl status name.service systemctl is-enable name.service |
chkconfig --list |
systemctl list-unit-files --type service |