PuTTY

Let's clarify the terminology for you.

1. PuTTY is not a command, it is a standalone terminal client.

2. PuTTY does not have commands. The 'commands' depend on what server you are connected to is using as a shell.

Some basic UNIX commands

listing folders: ls (use "ls" instead of "dir")
entering directory: cd folder_name
for going back to root: cd
for going back one step: cd ..
deleting folder: rm folder_name
creating tar file: tar cvf folder_name.tar folder_name
for extracting: tar -xf folder_name.tar

CTRL+F = forward (to go to next page)
CTRL+B = backward (back to previous page)
press "i" to start edit
:w = save
:wq = save & quit
:q = quit with no changes made
:q! = quit by discarding changes made