What is it? (was Re: Current Run-Level: How can you tell?)

[Gary Weimer 253-7796]

In article <dfs.672587346 at pulaski>, dfs at doe.carleton.ca (David F. Skoll)
writes:
|> I use a Sun system, and I've never heard of "Run-Level."
|> 
|> What is it?

A brief description (since I've only had brief exposure to it...)

BSD Unix (?) has three "run levels": Single-user, Multi-user and Halt.
Usually we say the system is: 
     in Single-user mode
     in Multi-user mode
     Down ( 1/2 :-) )

System V (?) Unix has many levels:
     0 == Halt
     3 == normal Multi-user mode
     others (this is were it gets brief :-) )

weimer at ssd.kodak.com ( Gary Weimer )