Joseph,
Yes, I am sure that is true. Something in trying what JT posted made me think that as well and when I rechecked the man page for su I was reminded of the difference although I never really understood the details. It's these little discoveries that make life interesting and make me want to explore. Basicly, I always thought you were logging in as the other user but somehow logging in differently, I guess using su without the "-" is more like a "steal the identity of". LOL
JT,
Thanks very much. I did always know there were environmental differences but I never knew how to see the difference. Comparing results of 'env' and of 'set' before and after the switch was a frustrating experience for several reasons. And I never knew about using export without arguments. I had only ever seen it used to actually export things. Probably sounds dumb to most of you but a revelation to me as it also explains some other things for me.
On 11/29/06, Jeremy C. Reed <reed@reedmedia.net> wrote:
> su -
> the - means to login instead of just changing users. The environment
> vars are set differently. To see the differences type
> export
>
> in each case and you'll get a list of the shell VARS. You can compare
> the two and see the differences.
Which may explain why XAUTHORITY (mentioned in previous email) may be
missing.
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