The “which” command will reveal the absolute path of the executable file called when issuing a command.
The linux which command is useful in determining if you may need to add a path to your $PATH variable in your ~/.profile file in order to be able to issue the command.
The above example echos out the path. It is possible that there are more than one pathh to the executable file in the $PATH variable.
If you want to echo out ALL the paths in the $PATH variable, then use the -a flag (option)