runlevel -- find the previous and current system runlevel.
reads the system 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,
prints the word unknown
and exits with an error.
can be used in rc
scripts as a substitute for the
System-V who -r
command. However, in newer versions of init
this information is also available in the environment variables
- The name of the utmp file to read.
Miquel van Smoorenburg, email@example.com