|
Linux Runlevels Linux systems today generally use eight runlevels. Runlevels define what
services or processes should be running on the system. The init process can
run the system in one of eight runlevels. The system runs only one of the
eight runlevels at a time. The main runlevels are from 0 - 6. Here's what
each runlevel is for
Runlevel 0: Halt System - To shutdown the system Runlevel 1: Single user
mode Runlevel 2: Basic multi user mode without NFS Runlevel 3: Full multi
user mode (text based) Runlevel 4: unused Runlevel 5: Multi user mode with
Graphical User Interface Runlevel 6: Reboot System
Runlevels 1 and 2 are generally used for debugging purposed only, and are
not used during normal operations. Most desktop linux distributions boot
into runlevel 5, which starts up the Graphical Login Prompt. This allows the
user to use the system with X-Windows server enabled. Most servers boot into
runlevel 3, which starts the text based login prompt.
Linux runlevels can be changed on the fly using the init tool. If you want
to switch from text based operations to the Graphical Interface, you just
have to type in 'telinit 5' in the root prompt. This will bring up the
Graphical Interface in your system.
Each runlevel can be configured by the system administrator. The "/etc/inittab"
file has information on which runlevel to start the system at and lists the
processes to be run at each runlevel.
Each runlevel has its own directory structure where you can define the order
in which the services start. These directories are located in the /etc/rc.d/
directory, under which you have rc1.d, rc2.d, rc3.d…. rc6.d directories
where the number from 0 through 6 that corresponds to the runlevel. Inside
each directory are symbolic links that point to master initscripts found in
/etc/init.d or /etc/rc.d/init.d.
You can also change the runlevel at boot time. If your system uses LILO as
the boot manager, you can append the runlevel to the boot command : LILO:
linux 3 or LILO: linux 5
If your system uses GRUB, you can change the boot runlevel by pressing the
`e' key to edit the boot configuration. append the runlevel to the end of
the boot command as shown: kernel /vmlinuz ro root=/dev/hda1 5
About the Author
Vinu Thomas is a consultant on Web design and Internet Technologies. His
website is http://www.vinuthomas.com.
You can read more articles on Linux @
http://www.vinuthomas.com/sections-listarticles-6.html
Additional How to install red hat linux 9 Resources
redhat.com |
Home. Enterprise Linux. Training. Red Hat Network. Open Source Now ... How to Download Red Hat Installation Files ... To install Red Hat, you...
How to Install Red Hat Linux via PXE and Kickstart
Next Previous Contents. How to Install Red Hat Linux via PXE and Kickstart. v1.6.1, January 23, 2004. This document describes the installation of a general purpose Red Hat Linux ...
Red Hat Linux 9.0
VMware is the Global Leader in Virtual Infrastructure Software for Industry-Standard Systems. ... You need to install Red Hat Linux 9.0 using the text mode installer, which you may choose ...
LinuxQuestions.org - Where Linux users come for help
Q. How much is membership? A. In the true Linux ... question firefox won't install extensions ... on Mon 14 Mar 2005, 9:43 PM I am happy to...
How To Install Red Hat Linux 9
How To Install Red Hat Linux 9. Rate this topic: Sep 1 2004, 09:59. Post #16. Penguin Sidekick. Group: Registered. Posts: 4,122. Joined: 23-December 02. From: London_ ... The Thread, How To ...
Can I install Red Hat Linux 9 onmy PC? Please help!
...Can I install Red Hat Linux 9 onmy PC? please help, I just love to use Linux, but don't know much about it.....Linux ..Please help .. My PC specification ..MotherBoard: GigaByte 8LS533 ...
Microsoft's TrueType core fonts on linux
How to install. Installing Microsoft's TrueType core fonts for the web on any rpm based linux box with ... restart ... and not reload on Mandrake...
LinuxISO.org - A place to learn about, download, and discuss Linux.
...Red Hat 9 is the last version of Red Hat Linux per se, and Red Hat will stop supporting it soon. Instead they offer a commercial.....It is well-supported by commercial software, and ...
How to Install Red Hat Linux via PXE and Kickstart
How to Install Red Hat Linux via PXE and Kickstart...
IBM Redbooks | How to install Red Hat Linux on the xSeries 440
Redbooks All IBM. Related links. How to install Red Hat Linux on the xSeries 440. Abstract. Contents. In this tip, we discuss the installation of Red Hat Linux Advanced Server V 2.1 on the ...
Choosing to Upgrade or Install
...To perform a new installation of Red Hat Linux on your system, select Perform a new Red Hat Linux installation and click Next.....to Red Hat Linux 9.You can relax some of the checks ...
How To Install Red Hat Linux 9
How To Install Red Hat Linux 9. Rate this topic: Sep 1 2004, 07:29. Post #1. Neowinian. Group: Registered. Posts: 39. Joined: 2-August 04. Member No.: 64,777 ... How to installation ...
Can I install Red Hat Linux 9 onmy PC? Please help!
...I've heard a lot about Linux, and I am just so excited to see, what it looks like, how is Linux different from Windows, as.....so install windows first and then install linux, which ...
The Unofficial Fedora FAQ
...much like Red Hat Linux 8 - Red Hat Linux 9. The easiness is not guaranteed. If you don't want to ... To install some software, you type:
OSNews - Red Hat Linux 9 Review
Review of Red Hat Linux 9 (Shrike) offers a discussion on installation, user experience, and the decision to upgrade. See screenshots showing Bluecurve in Gnome and KDE.
Other Recommended How to install red hat linux 9 Links
Linux backup tar
Linux oracle cluster
Access cluster free linux
Cluster linux manegment sof...
Bladecenter linux cluster
Hpc linux cluster
Linux cluster software
Download red hat linux 9
How to install red hat linu...
Red hat linux 9 tutorial
Linux help desk software
Help desk linux
Blogspot.com desk help linu...
Suse linux help
Mandrake linux help
|
