1. Login to your operating system. Check the VNC server process in the system.
# ps -ef | grep vnc nobody 10639 4192 0 02:40 ? 00:00:16 Xvnc :42 -inetd -once root 11388 1 0 03:45 pts/1 00:00:00 Xvnc :2 -desktop X nobody 11422 4192 0 03:49 ? 00:00:00 Xvnc :42 -inetd -once root 13445 13388 0 12:54 pts/3 00:00:00 grep vnc
2. Kill the VNC server session based on the PID.
# kill -9 <PID>
3. Change the directory to /tmp, find and delete the X* files. Then, go to .X11-unix folder and delete the X* files. (you can select which session you want to delete based on number X0, X1, X2..)
# cd / # cd tmp/ # more .X* :::::::::::::: .X0-lock :::::::::::::: 4237 :::::::::::::: .X1-lock :::::::::::::: 10639 *** .X11-unix: directory *** :::::::::::::: .X2-lock :::::::::::::: 11388 :::::::::::::: .X3-lock :::::::::::::: 11422 # rm -rf .X*
# cd .X11-unix/ # rm -rf .X*
4. Go to the user directory (which user that you use to connect to vncserver), delete the log and pid files of the session.
# cd /root/.vnc/ # ls <server-name>:2.log <server-name>:3.log <server-name>:4.log passwd <server-name>:2.pid <server-name>:3.pid <server-name>:4.pid xstartup
# rm -rf <pid files> # rm -rf <log files>
