command execute without ./

kaon · 09-15-2004, 10:50 AM

Hi all,

I recently found that:

tsun@sKex:~/vnc-4.0-x86_linux$ echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/games:/usr/lib/java/bin:/usr/lib/java/jre/bin:.

Commands in the self directory can be run without ./!
Just found a little dot in the last.

How can I just remove that . from $PATH.

Thanks.

Cedrik · 09-15-2004, 11:37 AM

Try look in your ~/.bashrc or ~/.bash_profile if there are not instructions lines which set your PATH with this dot..

Or you can add 2 lines in bottom of ~/.bashrc like this :

PATH=$(echo $PATH | perl -e 's/:?\.:?/:/')
export PATH

gbonvehi · 09-15-2004, 12:11 PM

Edit: Ignore this post, I didn't see the latest dot

kaon, do you mean commands that are in those directories? If so, that's the desired effect of the PATH variable.

kodon · 09-15-2004, 12:26 PM

on my box the directive to add ./ for non-root users
is the last section of /etc/profile

kaon · 09-15-2004, 01:13 PM

Yeah, I just found that too!

Do not know why such bad setting appears in slackware.

Cedrik · 09-15-2004, 01:15 PM

You right kodon, I didn't noticed that because of some PATH tweakings in my ~/.bashrc

What a strange feature, I certainly don't want that

kaon · 09-15-2004, 01:31 PM

Quote:

Originally posted by Cedrik

Or you can add 2 lines in bottom of ~/.bashrc like this :

PATH=$(echo $PATH | perl -e 's/:?\.:?/:/')
export PATH

I found that this would yield a null string for $PATH.
P.S. I do not know perl at all

kodon · 09-15-2004, 03:44 PM

just wondering why it's such a bad idea for non-roots to have ./ in path?
i kinda understand why you might not want root to have it...i think

Cedrik · 09-15-2004, 04:42 PM

just wondering why it's such a bad idea for non-roots to have ./ in path?
For my part, simply because I am used to use ./ to execute scripts in current directory, say it is for a personal habit

I found that this would yield a null string for $PATH.
P.S. I do not know perl at all

My bad, I forget the -p switch

Code:

PATH=$(echo $PATH | perl -pe 's/:?\.:?/:/')
export PATH

kodon · 09-15-2004, 04:53 PM

i don't understand

i thought with ./ in path
you would be able to do
both [script] and ./[script]

Cedrik · 09-15-2004, 05:03 PM

Ok, I have a home directory with a 'bin' subdirectory which is in my PATH and if I consider a custom script stable, I put it here. So I used to do a difference between 'temp' scripts like, experiencing script, configure script from programs packages etc...
I simply used to ./ all scripts that are not in my PATH and I don't want to be able to execute them directly by their name.

kodon · 09-15-2004, 06:14 PM

ok
think i get it now

you should not run unstable(possibly malicious)
scripts from a directory in $PATH, because they
would have access to $SELF...

thanks, i had wondered about that with PHP also

off to change that /etc/profile