Control of System Services (Linux)

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

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Systemctl Stop sshd # #关闭指定服务

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Systemctl Start sshd # #开启指定服务

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Systemctl Restart sshd # #从新启动服务
Systemctl Enable SSHD # #设定指定服务开机开启
Systemctl Disable SSHD # #设定指定服务开机关闭
Systemctl Reload sshd # #使指定服务从新加载配置
Systemctl list-dependencies sshd # #查看指定服务的倚赖关系

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Systemctl Mask sshd # #冻结指定服务
Systemctl unmask sshd # #启用服务
Systemctl Set-default Multi-user.target # #开机不开启图形

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

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Setterm # #文本界面设定color

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Change color

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restore system specified color
3.Service Status
Systemctl StatusService Name

Loaded # #The system service has been initialized, the configuration has been loaded
Active(Running)            ##one or more programs are executing in the system,
#vsftpdThis is the pattern .

Atcive(exited)              ##A service that only performs a normal end,
# There are currently no programs in the system .

Atcive(Waiting)            ##is being executed.
# and wait for other events to continue.

Inactive # #Service shutdown
enbaled # #Service boot up
Disabled # #service boot not self-starter
Static # #Service boot entry cannot be managed

Control of System Services (Linux)