Garry T. Williams wrote:
On Thursday 12 March 2009 21:25:27 Dave Bolt IT Solutions wrote:
When I start a terminal as dave I get a prompt [dave@Test-Host ~]$
When I do su amandabackup I get a prompt bash-3.2$
^^^^^^^^^^^^^^^
Check the manual page for su(1).
If you had entered `su - amandabackup', that user's login scripts
would have been run.
In general, using su without its `-' parameter is a bad idea[*]
especially when switching to the root login.
Interesting thought, I generally warn people that "-" or "-l" will do a login,
and they will wind up running in the other user's home directory. Definitely not
what people want many times, such as running "make install" after building a
package, or the like.
For instance
sudo su root -c "make install"
runs the install rules in the current directory, probably just what you wanted.
sudo su - -c "make install"
runs the install part of whatever Makefile is in root's home directory. Almost
certainly not what you intended!
______________
[*] Unless, of course, you know why you want to do that.
--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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