Sometime duplicate executable files or alias creates tons of confusion. To find out duplicated executables files you can use chkdupexe command.
It will scan the union of $PATH and a hardcoded list of common locations for binaries. It will report dangling symlinks and duplicately-named binaries.
Dangling symlink: /usr/bin/rmic Dangling symlink: /usr/bin/jar -rwxr-xr-x 1 root root 38936 Sep 23 2004 /usr/bin/nsupdate -rwxr-xr-x 1 root root 203960 Jan 26 2005 /usr/sbin/nsupdate -rwxr-xr-x 1 root root 15139 Apr 6 01:48 /sbin/grub-install -rwxr-xr-x 1 root root 6453 Apr 1 18:38 /usr/sbin/grub-install
As you see, it is quite easy to identify all those duplicates executables files. There is also some good discussion going on about PATH and aliases.
Updated for accuracy.Tweet itFacebook itGoogle+ itPDF itFound an error/typo on this page?