Meng New Linux Learning Path (vii)

First, the control of system services

1.systemd

System initialization program, the first process that the system starts, the PID is 1

2.systemctl command

Systemctl List-units # #列出当前系统服务的状态

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Systemctl List-unit-files # #列出服务的开机状态

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Systemctl Status sshd # #查看指定服务的状态

Systemctl Stop sshd # #关闭指定服务

Systemctl Start sshd # #开启指定服务

Systemctl Restart sshd # #从新启动服务

Systemctl Enable SSHD # #设定指定服务器开机开启

Systemctl Disable SSHD # #设定指定服务器开机关闭

Systemctl Reload sshd # #使指定服务器从新加载配置

Systemctl list-dependencies sshd # #查看指定服务的依赖关系

Systemctl Mask sshd # #冻结指定服务

Systemctl umask sshd # #启用冻结服务

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Systemctl Set-default Multi-user.target # #开机不开启图形界面

Systemctl Set-default Graphical.target # #开机启动图形界面

3. Service Status

Systemctl Status Service Name

Loaded # #系统服务已经初始化完成, loaded configuration

Active (running) # #争优一个或多个程序在系统中执行

# #vsftpd is the pattern

Active (exited) # #仅执行一次就正常结束的服务

# #目前没有任何程序在系统中执行

Active (Waiting) # #正在执行当中, but wait until another time to continue processing

Inactive # #服务关闭

Enabled # #服务开机启动

Disabled # #服务开机不自启

Static # #服务开机启动项不可被管理

Failed # #系统配置错误

Meng New Linux Learning Path (vii)