【列表9.7】 runsul 腳本程序。
# runsul: Shell script to log on as superuser
# Usage: runsul
# Note: Shares display with all processes, writes the
#       library path command to the user's home directory,
#       then starts the logon as superuser.
xhost + > /dev/null
echo "LD_LIBRARY_PATH="$LD_LIBRARY_PATH >~/libpath.tmp
chmod 777 ~/libpath.tmp
su