How to find the location (directory) of an executable file on Ubuntu

Question

How can I find the location of the executable file of any software on Ubuntu?

Answer 1

Open the terminal on Ubuntu and type one of the following commands...

1. $ which XXX   where XXX - name of the executable file of a software e.g. $ which atom will show the location of executable of Atom text editor

2.  $ whereis XXX   where XXX - name of the executable file of a software e.g. $ whereis atom will show the location of executable of Atom text editor