Systemctl kurz und knapp: Unterschied zwischen den Versionen

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= systemd Crashkurs =
 +
*Schnelle Übersicht über die wichtigsten Befehle für Service-Management und Targets unter systemd.*
 +
 
=Listing aller Services=
 
=Listing aller Services=
 
*systemctl --type=service
 
*systemctl --type=service
 +
 
=Logging eines Dienstes=
 
=Logging eines Dienstes=
 
*journalctl -u ssh
 
*journalctl -u ssh
 +
 
=Logging eines Dienstes fortlaufend=
 
=Logging eines Dienstes fortlaufend=
 
*journalctl -f -u ssh
 
*journalctl -f -u ssh
 +
 
=Eigenen Service Unit erstellen=
 
=Eigenen Service Unit erstellen=
 
;Service Datei
 
;Service Datei
 
*vi /etc/systemd/system/simple-http.service
 
*vi /etc/systemd/system/simple-http.service
 
 
<pre>
 
<pre>
 
[Unit]
 
[Unit]
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*systemctl enable simple-http.service
 
*systemctl enable simple-http.service
 
*systemctl start simple-http.service
 
*systemctl start simple-http.service
 +
 
;Logs lesen
 
;Logs lesen
 
*journalctl -fu simple-http
 
*journalctl -fu simple-http
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=Starten eines Service=
 
=Starten eines Service=
 
*systemctl start simple-http
 
*systemctl start simple-http
 +
 
=Stoppen eines Service=
 
=Stoppen eines Service=
 
*systemctl stop simple-http
 
*systemctl stop simple-http
 +
 
=Restarten eines Service=
 
=Restarten eines Service=
 
*systemctl restart simple-http
 
*systemctl restart simple-http
 +
 
=Aktivieren eines Service=
 
=Aktivieren eines Service=
*systemctl enables imple-http
+
*systemctl enable simple-http
 +
 
 
=Deaktivieren eines Service=
 
=Deaktivieren eines Service=
 
*systemctl disable simple-http
 
*systemctl disable simple-http
 +
 
=Status eines Service=
 
=Status eines Service=
 
*systemctl status simple-http
 
*systemctl status simple-http
  
=Set Target=
+
=Set Default Target=
*systemctl -f enable multi-user.target
+
*systemctl set-default multi-user.target
*systemctl -f enable graphical.target
+
*systemctl set-default graphical.target
 +
 
 
=Get Default Target=
 
=Get Default Target=
 
*systemctl get-default
 
*systemctl get-default
graphical.target
+
 
 
=Changing Target=
 
=Changing Target=
*systemctl isolate multi-user.target
+
*systemctl isolate multi-user.target
 
 
=Set Default Target=
 
*systemctl set-default  multi-user.target
 
  
 
=Show Targets=
 
=Show Targets=
*systemctl list-units --type target  
+
*systemctl list-units --type target
 
<pre>
 
<pre>
 
UNIT                        LOAD  ACTIVE SUB    DESCRIPTION
 
UNIT                        LOAD  ACTIVE SUB    DESCRIPTION

Version vom 12. November 2025, 16:09 Uhr

systemd Crashkurs

  • Schnelle Übersicht über die wichtigsten Befehle für Service-Management und Targets unter systemd.*

Listing aller Services

  • systemctl --type=service

Logging eines Dienstes

  • journalctl -u ssh

Logging eines Dienstes fortlaufend

  • journalctl -f -u ssh

Eigenen Service Unit erstellen

Service Datei
  • vi /etc/systemd/system/simple-http.service
[Unit]
Description=My Miscellaneous Service
After=network.target

[Service]
Type=simple
User=xinux
WorkingDirectory=/home/xinux/share
ExecStart=/bin/python3 -m http.server
Restart=on-abort

[Install]
WantedBy=multi-user.target
Aktivieren
  • systemctl daemon-reload
  • systemctl enable simple-http.service
  • systemctl start simple-http.service
Logs lesen
  • journalctl -fu simple-http

Starten eines Service

  • systemctl start simple-http

Stoppen eines Service

  • systemctl stop simple-http

Restarten eines Service

  • systemctl restart simple-http

Aktivieren eines Service

  • systemctl enable simple-http

Deaktivieren eines Service

  • systemctl disable simple-http

Status eines Service

  • systemctl status simple-http

Set Default Target

  • systemctl set-default multi-user.target
  • systemctl set-default graphical.target

Get Default Target

  • systemctl get-default

Changing Target

  • systemctl isolate multi-user.target

Show Targets

  • systemctl list-units --type target
UNIT                        LOAD   ACTIVE SUB    DESCRIPTION
basic.target                loaded active active Basic System
bluetooth.target            loaded active active Bluetooth
ceph-mds.target             loaded active active ceph target allowing to start/stop all ceph-mds@.service instances at once
ceph-mon.target             loaded active active ceph target allowing to start/stop all ceph-mon@.service instances at once
...