nxxx@NXXX:~/downloads/source/xAcetoneISO2-src$ sudo sh -v installer #!/bin/bash echo "" echo "Welcome to xAcetoneISO2, a gtk port of the KDE AcetoneISO2 software" Welcome to xAcetoneISO2, a gtk port of the KDE AcetoneISO2 software sleep 3 echo "" echo "checking write permissions" checking write permissions sleep 2 if test ! -w /opt/ then echo "failed" echo "Please run Installer as ROOT user" echo "" exit else rm -rf /opt/acetoneiso2-test echo "user has full permissions to write" fi failed Please run Installer as ROOT user