How to get list of currently working commands in Cygwin?

Issue

Currently working with the linphone-android integration. I have installed some packages during installation of Cygwin.

When I try some of the commands like ls, rm, cd, wget, tar and etc.. are working fine. But few commands like shell, clean are not working. It gives error command not found.

So, my question is,

Is there any way to get list of working commands for Cygwin?
Is there any way to install packages for these commands rather than installing them manually?

Solution

In my opinion the most elegant solution is to use the compgen command:

compgen -c lists all the available commands
compgen -a lists all the available aliases

You can also try a more brute approach:

Get all the paths from cygwin using echo $PATH and then for each folder execute ls -h <folder_name>

Answered By - Viorel Mirea