Difference between 'init s' and 'init 1'

 
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Operating Systems Linux Red Hat Difference between 'init s' and 'init 1'
# 1  
Old 01-22-2010
Difference between 'init s' and 'init 1'

What is the difference between 'init s' and 'init 1'.
I know that both will work to change the current run level to single user mode.

Is there any difference in those two commands?
# 2  
Old 01-22-2010
"init 1" is administrative mode that runs the /etc/inittab script.
"init s" is repair mode that doesn't mount filesystem. So, /etc/inittab doesn't need to be there Smilie
# 3  
Old 01-23-2010
Booting to runlevel 1 causes RHEL to process the /etc/rc.d/rc.sysinit script followed a single script from rc1.d which after some basic checks and cleanup execs init S.

Booting to runlevel s (S or single) causes RHEL to just process the /etc/rc.d/rc.sysinit script. If /etc/inittab is missing or corrupt, you go directly to a root shell with no scripts processed.
# 4  
Old 01-27-2010
Thanks fpmurphy. Appreciate your explanation.
If possible coulnd you please provide any document on this init s and init S?

If you have doc, please post them.

Thanks in advance.
# 5  
Old 01-27-2010
The RH300 training material covers it in detail.
# 6  
Old 02-01-2010
As of now, I dont have RH material. If possible send me some docs on that please.
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