I accidentally linked my "su" command to Sublime Text binary (that's what you get when you trust hitting tab without looking...) Now, "su" just opens a SublimeTExt session. Does anybody know how can I revert to the previous version and point "su" to what it is supposed to be pointing at? Thank you!
EDIT: the command that was accidentaly issued was
sudo ln -s /opt/Sublime\ Text\ 2/sublime_text /usr/bin/su
Original su is in /bin/su, so just delete your link:
sudo rm /usr/bin/su
Check which su if it's back to /bin/su
There a priority in executable paths, see:
echo $PATH
/usr/bin comes before /bin, So your link will be executed first. But to learn create that link again and run which su you will get /usr/bin/su.
Well, all $PATH can hold executable itself or its link. So most of those paths hold a mixture, give ls -l /usr/bin a try (I cut long results) :
total 925272
-rwxr-xr-x 1 root root 39552 Dec 18 14:36 [
lrwxrwxrwx 1 root root 8 Dec 21 15:14 2to3 -> 2to3-2.7
-rwxr-xr-x 1 root root 96 Jan 12 10:12 2to3-2.7
-rwxr-xr-x 1 root root 96 Jan 27 17:21 2to3-3.3
-rwxr-xr-x 1 root root 96 Jan 27 17:23 2to3-3.4
-rwxr-xr-x 1 root root 5655 Jan 7 12:12 404main
-rwxr-xr-x 1 root root 10320 Feb 7 2013 411toppm
-rwxr-xr-x 1 root root 39 Feb 17 2012 7z
-rwxr-xr-x 1 root root 40 Feb 17 2012 7za
-rwxr-xr-x 1 root root 40 Feb 17 2012 7zr
-rwxr-xr-x 1 root root 106584 Jan 15 06:49 a2p
lrwxrwxrwx 1 root root 52 Jan 25 00:22 a2ping -> ../share/texlive/texmf-dist/scripts/a2ping/a2ping.pl
-rwxr-xr-x 1 root root 883 Apr 30 2007 a5booklet
lrwxrwxrwx 1 root root 54 Jan 25 00:22 a5toa4 -> ../share/texlive/texmf-dist/scripts/pfarrei/a5toa4.tlu
-rwxr-xr-x 1 root root 10328 Apr 28 2009 aa3d
Links are clear now, 3 links, others are files:
l in the beginning of lrwxrwxrwx (l link, d directory, - normal file, c char device).
-> point to the target file.
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