# Checks for environment variables. # Uncomment the following line to remove the variable. #unset DISPLAY if [ "$DISPLAY" == "" ] then echo "DISPLAY not set, using :0.0 as default." DISPLAY=":0.0" fi #unset SHELL if [ "$SHELL" == "" ] then echo "Using /bin/bash, which is the shell you should use." SHELL=/bin/bash fi #unset USER if [ "$USER" == "" ] then echo -n "Please enter your username: " read USER fi #unset HOME if [ "$HOME" == "" ] then # Check for Mac OS X home. if [ -d "/Users/$USER" ] then HOME="/Users/$USER" # Check for Linux home. elif [ -d "/home/$USER" ] then HOME="/home/$USER" else echo -n "Please enter your home directory: " read HOME echo fi fi # Display all the values. echo "DISPLAY=$DISPLAY" echo "SHELL=$SHELL" echo "USER=$USER" echo "HOME=$HOME"