Baskaran Sankaran wrote:
>Sorry if it is so silly.
>
>Is there any difference between logging in as root, or changing to su from a different
>user.
There is a slight difference:
su creates a shell with the priviliges of the named user (default is root). This shell
will *not* be a login shell, which means that your paths do not change. If you do a su
- (==su --login), then the new shell reads the named users .*profile file, ie, it has
the same effect as logging in from a console. For a normal su it does not have the
same effect as a login, because not all environment variables are changed.
To better understand this:
$echo $PATH
$su
password:
#echo $PATH
#exit
exit
$su -
password:
#echo $PATH
(path outputs deleted here)
Try man su :).
Devdas Bhagat
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