I installed emacs packages from MobaXterm. When I'm in MobaXterm terminal I could run any Cygwin commands e.g. 'ls' or 'which' but when I start Emacs and call the shell it does not recognize any of unix command.

sh-4.1$ ls sh: ls: command not found sh-4.1$ pwd /drives/c/Software/MobaXterm_Portable_v22.0 sh-4.1$ ls sh: ls: command not found sh-4.1$ which pwd sh: which: command not found sh-4.1$ 

Obviously I messed with settings but could someone help to resolve it?