November 24, 2013

RHEL: How to Switch Users in Multiuser Runlevels

Switching User

To switch to a different user, e.g. student, run To switch to root

Runlevels

Most Linux distribution can be ran in 5 different runlevels. Runlevel 0 and 6 are special, which you can see below.

  • 0 - Shutdown
  • 1 - Single user mode, without network
  • 2 - Multiuser, without NFS (The same as 3, if you do not have networking)
  • 3 - Full multiuser mode, with network.
  • 4 - Unused
  • 5 - X11, graphical mode with network
  • 6 - Reboot
To see the current runlevel, type:

The default runlevel is set in /etc/inittab.

How to Switch Runlevels

You can switch the runlevel with init, e.g. init 3. But from the graphical mode, there is also a keyboard shortcut.

ctrl + alt + F1 - for init 1, ctrl + alt + F2 - for init 2, etc.

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