Thread: How many run modes are their in Linux?

An interviewer asked me this Question. Pleases any one can tell me the answer.

Linux has 7 different run levels (or operating modes): rc0.d - system halted rc1.d - single user mode rc2.d - single user mode with networking rc3.d - multi-user mode - boot up in text mode rc4.d - not yet defined rc5.d - multi-user mode - boot up in x windows rc6.d - shutdown & reboot

Originally Posted by pravin42

An interviewer asked me this Question. Pleases any one can tell me the answer.

There is two main modes in LINUX one is User mode and the second one is the Rescue mode.

there are 6 runlevel in linux.
you can check current runlevel and previous runlevel by 'runlevel' command.
and change run level by init <runlevel>.

Run Modes are TWO (2)
Run Levels are Seven (7)