查看系统当前runlevel

NAME
       runlevel -- find the current and previous system runlevel.

SYNOPSIS
       runlevel [utmp]

DESCRIPTION
       Runlevel reads the system utmp file (typically /var/run/utmp) to locate
       the runlevel record, and then prints the previous  and  current	system
       runlevel	 on its standard output, separated by a single space. If there
       is no previous system runlevel, the letter N will be printed instead.

       If no utmp file exists, or if no runlevel record can be found, runlevel
       prints the word unknown and exits with an error.

       Runlevel can be used in rc scripts as a substitute for the System-V who
       -r command.  However, in newer versions of init(8) this information  is
       also available in the environment variables RUNLEVEL and PREVLEVEL.

OPTIONS
       utmp   The name of the utmp file to read.

SEE ALSO
       init(8), utmp(5)

AUTHOR
       Miquel van Smoorenburg, [email protected]

				 May 27, 1997			   RUNLEVEL(8)