su -

grunch · 02-10-2008, 04:27 PM

Hi, this may be a stupid question, but i wanna know why is the diference between the command "su" and "su -" ?

i had seen the "-" symbol in others shell command but without a letter how we use to see like "ls -l"

greets

leonscape · 02-10-2008, 04:35 PM

When you add the dash to su you inherit roots enviroment rather than just the rights.

i.e. you get roots paths settings and even bash aliases exported ($PATH) variables the lot.

It gets you closer to what you would get if root had just logged in rather than just su'ed to root.

grunch · 02-10-2008, 11:10 PM

Quote:

Originally Posted by leonscape

When you add the dash to su you inherit roots enviroment rather than just the rights.

i.e. you get roots paths settings and even bash aliases exported ($PATH) variables the lot.

It gets you closer to what you would get if root had just logged in rather than just su'ed to root.

Thank's leonscape, very clear

Regards