初期設定 : サービスの設定2024/04/24

	サービスの状態の確認や有効化/無効化は以下のように実行可能です。
[1]	サービスの一覧を表示します。

# 稼働中のサービスの一覧
# [--all] 付加で停止中も含めて全サービスをリスト
# [--no-pager] 付加で [less/more] 等の pager に渡さない

[root@dlp ~]#

systemctl -t service

  UNIT                                     LOAD   ACTIVE SUB     DESCRIPTION   >
  abrt-journal-core.service                loaded active running ABRT coredumpc>
  abrt-oops.service                        loaded active running ABRT kernel lo>
  abrt-xorg.service                        loaded active running ABRT Xorg log >
  abrtd.service                            loaded active running ABRT Daemon
  atd.service                              loaded active running Deferred execu>
  auditd.service                           loaded active running Security Audit>
  chronyd.service                          loaded active running NTP client/ser>
  crond.service                            loaded active running Command Schedu>
  dbus-broker.service                      loaded active running D-Bus System M>

.....
.....

  systemd-zram-setup@zram0.service         loaded active exited  Create swap on>
  user-runtime-dir@0.service               loaded active exited  User Runtime D>
  user@0.service                           loaded active running User Manager f>

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

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

# 全サービスの一覧

[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

.....
.....

udisks2.service                              enabled         enabled
usb_modeswitch@.service                      static          -
user-runtime-dir@.service                    static          -
user@.service                                static          -
wpa_supplicant.service                       disabled        disabled

255 unit files listed.

[2]	不要なサービスを停止には以下のように実行します。例として、[smartd] を停止して、システムの起動時に自動的に起動しないように設定します。

[root@dlp ~]#

systemctl disable --now smartd