Firefox error no display specified means that there is no X server(GUI) running on the remote host.

1. Make sure the OS has a Desktop version

Firefox error no display specified appears when your OS has no desktop version to support Firefox. Make sure the OS has a desktop version. Also, run **'**xhost +' once from a terminal then use the code below.

#add ip / hostname separated by white space myHost=1.2.3.4 export DISPLAY=:0

no ping request

COUNT=1

count=$(ping -c $COUNT $myHost | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }') if [ $count -eq 0 ]; then

100% failed

echo "Host : $myHost is down (ping failed) at $(date)" else firefox $myHost fi