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# 1  
Old 09-15-2009
SU question

Hi all

what the different
Quote:
su - root
and
Quote:
su root
thanks in adv
jiajin
# 2  
Old 09-15-2009
man su:

"The optional argument - may be used to provide an environment similar to what the user would expect had the user logged in directly."
# 3  
Old 09-15-2009
Hi

If the first argument to su is a dash (-), the environment will be changed to what would be expected if the user actually logged in as the specified user. Otherwise, the environment is passed along, with the exception of $PATH, which is controlled by PATH and SUPATH in /etc/default/su.

Cheers,
Shazin
 

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