7.2. Xdm for X11R5   

On a raw X11R5 machine, it is more basic (it doesn't assume any specific Window manager such as Motif):

    #!/bin/sh


    exec > $HOME/.xsession-errors 2>&1

                                               
    case $# in

    1)

        case $1 in

        failsafe)

                exec xterm -geometry 80x24-0-0

                ;;

        esac

    esac

                                               
    startup=$HOME/.xsession

    resources=$HOME/.Xresources


    if [ -f $startup ]; then

        exec $startup

                                               
    else

        if [ -f $resources ]; then

                xrdb -load $resources

        fi

        twm &

        exec xterm -geometry 80x24+10+10 -ls

    fi