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RHCSA-Service/Boot-MGT: Questions With Solutions
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RHCSA-Service/Boot-MGT: Questions With Solutions
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RHCSA-Service/Boot-MGT: Questions With SolutionsCommand is used to manage different types of systemd objects, called units
Right Ans - systemctl
List of available unit types Right Ans - systemctl -t help
Have a .service extension and represent system services Right Ans - Service
units
have a .socket extension and represent inter-process communication (IPC)
sockets Right Ans - Socket Units
have a .path extension and are used to delay the activation of a service until a
specific file system change occurs. Right Ans - Path Units
Systemctl Status - Unit configuration file has been processed. Right Ans -
loaded
Systemctl Status - Running with one or more continuing processes. Right
Ans - active (running)
Systemctl Status - Successfully completed a one-time configuration Right
Ans - active (exited)
Systemctl Status - Running but waiting for an event Right Ans - active
(waiting)
Systemctl Status - not running Right Ans - inactive
Systemctl Status - will be started @ boot time Right Ans - enabled
Systemctl status - will not be started @ boot time Right Ans - disabled
Systemctl status - Can not be enabled, but may be started by an enabled unit
automatically Right Ans - static
Query the state of only the service units. Right Ans - systemctl --
type=service
, Investigate any units which are in a failed or maintenance state. Optionally,
add the -l option to show the full output Right Ans - systemctl status
<service> -l
status argument may also be used to determine if a particular unit is active
Right Ans - systemctl is-active <service>
show if the unit is enabled to start at boot time Right Ans - systemctl is-
enabled <service>
List the active state of all loaded units. The --all option will add inactive units.
Right Ans - systemctl list-units --type=service
systemctl list-units --type=service --all
View the enabled and disabled settings for all units Right Ans - systemctl
list-unit-files --type=service
View only failed services. Right Ans - systemctl --failed --type=service
View the status of a service. Right Ans - systemctl status <service>
stop the service Right Ans - systemctl stop <service>
Start the service Right Ans - systemctl start <service>
restart service Right Ans - systemctl restart <service>
Issue instructions for a service to read and reload its configuration file
without a complete stop and start. Right Ans - systemctl reload <service>
command can be used to print out a tree of what other units must be started if
the specified unit is started. Right Ans - systemctl list-dependencies UNIT
prevent an administrator from accidentally starting a service Right Ans -
systemctl mask|unmask <service>
Disable the service Right Ans - systemctl disable <service>
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