Changes

<table border="1" cellspacing="0" cellpadding="5"><tr style="text-align:center;"><th>Operation</th><td>'''sftp Command'''<br>(Local Server)</td><td>'''sftp Command'''<br>(Remote Server)</td></tr><tr><td>Display current working directory</td><th>!pwd</th><th>pwd</th></tr><tr><td>Display directory contents</td><th>!ls</th><th>ls</th></tr><tr><td>Change directory location</td><th>lcd</th><th>cd</th></tr><tr><td>Upload file to remote server</td><th>put</th><th>-</th></tr><tr><td>Download file to local server</td><th>get</th><th>-</th></tr></table>