"$d_SysMaint""Linux/which - find path of a command.txt"
www.BillHowell.ca  05Aug2020 initial

Examples : 
https://www.linux.com/training-tutorials/how-configure-wireless-any-linux-desktop/
Make sure you have all of the above tools on  your computer before you continue. To test for this tools you can, from within your terminal window, issue the commands:
    which ifconfig
    which iwlist
    which iwconfig
    which dhclient
    which wpa_supplicant
You should see the path where each tool is installed. If you receive an error that a command is not installed you will need to install it. This should not be the case, since these are standard tools that are required for wireless networking.


08********08
21Feb2021
https://askubuntu.com/questions/8645/where-can-i-find-the-application-executables-in-the-filesystem

The complete answer is to check out the Filesystem Hierachy Standard (http://www.pathname.com/fhs/pub/fhs-2.3.html) documentation on what stuff goes where.
But in your case, if you want to know where a particular executable is (for example firefox) use
	which firefox
And you will get the full path like this
	/usr/bin/firefox
answered Oct 21 '10 at 11:45
Richard Holloway
    Filesystem Hierachy Standard... interesting... I won't be going through it with a fine-tooth comb, but its definitely good to know about it... It has given me another notch of insight into Linux... – Peter.O Oct 21 '10 at 12:17

Applications installed through the package manager usually go to /usr/bin. Applications you compile yourself go to /usr/local/bin/ unless you explicitly set a different prefix when compiling.
You can find out where a specific application lives by typing which application_name into the terminal. E.g. which firefox will print /usr/bin/firefox (if you're using firefox from the Ubuntu packages).
answered Oct 21 '10 at 11:46
sepp2k

A good CLI commad for this kind of questions is:
	whereis <nameofwhatever>
or, of course which (see below)
answered Oct 21 '10 at 11:45
Takkat
    This will find files named <nameofwhatever> which may or may not be executables. Some may even be directories. You should use which in place of whereis. – Richard Holloway Oct 21 '10 at 11:47
    Full ACK for standard installations (that we all hopefully have). – Takkat Oct 21 '10 at 12:32



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