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| Zeile 61: |
Zeile 61: |
| * In Debian 9/10, systemd uses targets instead of run-levels | | * In Debian 9/10, systemd uses targets instead of run-levels |
| * The /etc/inittab file is no longer used by systemd to change run levels | | * The /etc/inittab file is no longer used by systemd to change run levels |
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| == Change Default runlevel ==
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| The Default [[runlevel]] can be set either by using the systemctl command or making a symbolic link of runlevel targets file to the default target file
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| === Method 1 ===
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| Let’s check the current run level by using the following command
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| # systemctl get-default
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| graphical.target
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| Before changing the default runlevel, check out the available targets
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| # systemctl list-units --type=target
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| UNIT LOAD ACTIVE SUB DESCRIPTION
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| basic.target loaded active active Basic System
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| cryptsetup.target loaded active active Encrypted Volumes
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| getty.target loaded active active Login Prompts
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| graphical.target loaded active active Graphical Interface
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| local-fs-pre.target loaded active active Local File Systems (Pre)
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| local-fs.target loaded active active Local File Systems
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| multi-user.target loaded active active Multi-User System
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| network-online.target loaded active active Network is Online
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| network.target loaded active active Network
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| nss-user-lookup.target loaded active active User and Group Name Lookups
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| paths.target loaded active active Paths
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| remote-fs.target loaded active active Remote File Systems
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| slices.target loaded active active Slices
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| sockets.target loaded active active Sockets
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| sound.target loaded active active Sound Card
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| swap.target loaded active active Swap
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| sysinit.target loaded active active System Initialization
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| time-sync.target loaded active active System Time Synchronized
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| timers.target loaded active active Timers
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| LOAD = Reflects whether the unit definition was properly loaded
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| ACTIVE = The high-level unit activation state, i.e
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| * generalization of SUB
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| SUB = The low-level unit activation state, values depend on unit type
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| Issue the following command to change the default runlevel to runlevel 3 (nothing but a multi-user.target)
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| # systemctl set-default multi-user.target
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| Confirm the default runlevel
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| # systemctl get-default
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| multi-user.target
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| Reboot and check it out
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| # reboot
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| === Method 2 ===
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| In the previous method, we made the runlevel 3 as the default runlevel
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| * You can also confirm that using the following command
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| #systemctl get-default
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| multi-user.target
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| For a demo, issue the following command to make runlevel 5 as the default runlevel
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| # ln -sf /lib/systemd/system/runlevel5.target /etc/systemd/system/default.target
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| OR
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| # ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target
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| Again check the current level
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| * Now the default runlevel is the graphical mode(runlevel 5)
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| # systemctl get-default
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| graphical.target
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| Reboot the machine and check it out
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| # reboot
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