Initial Settings : Configure Services2024/10/31

	To enable or disable services, Configure like follows.
[1]	Display services list.

# the list of services that are active now
# to add [--all], display all included inactive services
# to add [--no-pager], do not use pagers like [less/more]

[root@dlp ~]#

systemctl -t service

  UNIT                        LOAD   ACTIVE SUB     DESCRIPTION
  abrt-journal-core.service   loaded active running ABRT coredumpctl message cr�c
  abrt-oops.service           loaded active running ABRT kernel log watcher
  abrt-xorg.service           loaded active running ABRT Xorg log watcher
  abrtd.service               loaded active running ABRT Daemon
  atd.service                 loaded active running Deferred execution scheduler
  auditd.service              loaded active running Security Audit Logging Serv�c
  chronyd.service             loaded active running NTP client/server
  crond.service               loaded active running Command Scheduler


  user-runtime-dir@0.service  loaded active exited  User Runtime Directory /run�c
  user@0.service              loaded active running User Manager for UID 0

Legend: LOAD   → Reflects whether the unit definition was properly loaded.
        ACTIVE → The high-level unit activation state, i.e. generalization of SUB.
        SUB    → The low-level unit activation state, values depend on unit type.

58 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.

# list of all services

[root@dlp ~]#

systemctl list-unit-files -t service

UNIT FILE                                               STATE           PRESET
abrt-journal-core.service                               enabled         enabled
abrt-oops.service                                       enabled         enabled
abrt-pstoreoops.service                                 disabled        disabled
abrt-vmcore.service                                     enabled         enabled
abrt-xorg.service                                       enabled         enabled
abrtd.service                                           enabled         enabled
arp-ethers.service                                      disabled        disabled
atd.service                                             enabled         enabled
audit-rules.service                                     enabled         enabled
auditd.service                                          enabled         enabled
auth-rpcgss-module.service                              static          -

.....
.....

user-runtime-dir@.service                               static          -
user@.service                                           static          -
wpa_supplicant.service                                  disabled        disabled

271 unit files listed.

[2]	Stop and turn OFF auto-start setting for a service if you don't need it. The example below means stopping and disable smartd service.

[root@dlp ~]#

systemctl disable --now smartd

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