displaysudo.sh script - sudo switch user and X11 display support

[Terrence Miao <terrence@xxxxxxxxxxxxxx>]

displaysudo.sh script - sudo switch user and X11 display support
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[terrence@baka terrence]$ cat bin/displaysudo.sh 
#!/bin/sh
#
# displaysudo.sh
#
USAGE="usage: $0 [-] username"
if [ $# -eq 1 ]; then
        DASH=''
        SU_USER=$1
elif [ $# -eq 2 ]; then
        if [ "$1" = "-" ]; then
                DASH='-'
                SU_USER=$2
        else
                echo "Incorrect syntax"
                echo "$USAGE"
                exit 1
        fi
elif [ $# -ge 2 ]; then
        echo "Wrong number of parameters"
        echo "$USAGE"
        exit 2
fi
if [ -x /usr/bin/X11/xauth ]; then
        XAUTH_PATH=/usr/bin/X11/xauth
elif [ -x /usr/openwin/bin/xauth ]; then
        XAUTH_PATH=/usr/openwin/bin/xauth
else
        DISPLAY="NO"
fi
if [ "${DISPLAY-NO}" = "NO" ]; then
        exec /usr/local/bin/sudo -u $SU_USER /usr/local/bin/sushi $DASH -c "(\
                /usr/bin/env $SHELL)"
else
        # DISPLAY2=`echo $DISPLAY | sed "s/localhost/${HOST}\/unix/"`
        # echo "DISPLAY2 = $DISPLAY2"
        DISPLAY2=`echo $DISPLAY | sed "s/localhost/unix/"`
        exec /usr/local/bin/sudo -u $SU_USER /usr/local/bin/sushi $DASH -c "(\
                 $XAUTH_PATH add `$XAUTH_PATH list $DISPLAY2`; \
                 /usr/bin/env DISPLAY=$DISPLAY /usr/local/bin/bash; \
                 $XAUTH_PATH remove $DISPLAY2)"
fi

[terrence@baka terrence]$ bin/displaysudo.sh - siwc
terrence's password:
Sun Microsystems Inc.   SunOS 5.8       Generic February 2000

[siwc@baka /siwc]$ cat .vimrc 
syntax on
"set guifont=Monospace\ 10
set guifont=9x15
colorscheme evening