[CentOS-docs] becoming root

Mon Apr 7 11:02:14 UTC 2008
Ralph Angenendt <ra+centos at br-online.de>

Ned Slider wrote:
> Any suggestions as to where might be an appropriate home for this on the 
> Wiki?

I think TipsAndTricks is appropriate for that, maybe under "Admin Tricks
and shell one-liners"? I don't see it under "HowTo" ...

> su
> or
> su -
> but the above are NOT the same thing.

... but the two commands above behave differently.

> When you become root by using 'su -', you also adopt root's PATH whereas 
> using just 'su' retains the original users PATH, hence why becoming root 
> using just 'su' and trying to run a command located in /usr/local/sbin, 
> /usr/sbin, or /sbin results in a 'command not found' error.

Please mention the bash manual page (and the section about login
shells), where this behaviour is explained in more detail.

Otherwise: Go ahead.


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