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Old 04-19-2012, 05:17 AM   #1
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Dear All
Pls tell why different run levels are required.

Old 04-19-2012, 05:18 AM   #2
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They are used to make the system run in different levels of operation. You're best bet is some background reading really -
Old 04-19-2012, 02:45 PM   #3
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And here I was going to answer:
NO. That information is secret!

Some runlevels are specific to system shutdown or special states, but the available ones can specify a different set of programs, processes, or services to run. Boot to runlevel 2 and you have a web server and router sans desktop, runlevel 3 you have an XWindows desktop with XFCE and media players in your menu, runlevel 5 and you find yourself running GNOME with OpenOffice and business applications in your menus: all without multi-os boot, virtualization, or jumping through hoops -- just the magic of Unix style runlevels!

And some people want to retire that system. Are they Crazy? [NOTE: rhetorical question, not to be answered rudely please. ]

And after all that: What made you think that they are all "required"?
Your reading (See post by Acid*) will teach you which are required under system that use runlevels.

Last edited by wpeckham; 04-19-2012 at 02:47 PM.


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