Here are command lines you can within SFTP.

Login.

<pre lang="bash">
sftp username@servername

Commands available from the local client.

<pre lang="bash">
lls
lcd
lmkdir
lpwd
lumask

Commands available on remote server.

<pre lang="bash">
cd
chmod
chown
exit
get
help
ln
ls
mkdir
put
pwd
rename
rm
rmdir
version
!