you need installed screen in linux.
\apt-get install screen

also chmod your linux server files for you
\chmod 755 <file/folder>

chown needed files, you are owner.
\chown <user> <file/folder>

chgrp needed files, you hold grp rights 
\chgrp <user> <file/folder>



##Screen commands

\screen -ls    ##list active screens with pid, process id number.
\kill <pid>    ##close screen
\screen -dmS <screen name> <script/command> ##opens screen for process

\top           ##list all processes in server , with pid numbers.