# Stop CUP Power Management Services
> Systemctl Stop Cups.Service
# 禁 CUPS service boot start
> Systemctl Disable Cups.Service
# View CUPS service status
> Systemctl Status Cups.Service
# Reset CUPS service boot start
> Systemctl Enable Cups.Service
Linux service management is both service and systemctl, systemd is the latest initialization system (init) of Linux system, and the role is to increase the start speed of the system, and start less process as much as possible, and start up as much as possible. The process management command corresponding to SystemD is SystemctL
CHKCONFIG and SYSTEMCTL command contrast
Task
Old instruction
New instruction
Automatically start a service
Chkconfig –level 3 httpd on
Systemctl enable httpd.service
Make a service not automatically
Chkconfig –level 3 httpd off
Systemctl disable httpd.service
Check service status
Service httpd status
Systemctl status httpd.service Systemctl is-active httpd.service (only Active)
Show all launched services
Chkconfig –List
Systemctl List-Units –Type = Service
Start service
Service httpd start
Systemctl start httpd.service
Out of service
Service httpd stop
Systemctl stop httpd.service
Restart service
Service Httpd Restart
Systemctl restart httpd.service
Overloaded service
Service httpd reload
Systemctl reload httpd.service
Example
Common system command
Systemctl command
instruction
Systemctl
List all system services
Systemctl List-Units
List all start Unit
Systemctl List-Unit-Files
List all startup files
Systemctl List-Units -Type = Service -ll
List all the Unit of all service types
Systemctl List-Units -Type = Service -ll Grep CPU
List the services of the CPU power management mechanism
Systemctl List-Units -Type = Target-AlL
List all Target
Systemctl list-unit-files –Type = Socket
List all available system sockets
SystemctL special usage
Systemctl is-active [Unit Type]
View service is running
Systemctl is-enable [Unit Type]
View service is set to boot
Systemctl Mask [Unit Type]
Logout designated service
Systemctl unmask [unit type]
Cancel to log out of the designated service
Systemctl command
instruction