Re: automatically set DISPLAY after telnet/rlogin ?

[lee@sectionIV.com (Lee Bradshaw)]

On Wed, Mar 18, 1998 at 10:50:51PM +0100, Michael Agbaglo wrote:
> is there is nice way to have the DISPLAY-Variable automatically set to
> the host from where I logged in ?

Well I have two suggestions:

1. use ssh, that's what I use now

2. This option may not qualify as "nice."  Looking at it right now, I'm
not sure it does the right thing for local displays, but I don't use it
anymore anyway.  It did seem to set the display properly through one
level of remote logins.  I had this code in my .kshrc and then in my
.bashrc for figuring out the display:

   # Get machine architecture
   case `/bin/uname 2> /dev/null` in
      SunOS )
         if [ `uname -r | cut -d "." -f 1` = "4" ]; then
            ARCH="sun"
         elif [ `uname -r | cut -d "." -f 1` = "5" ]; then
            ARCH="solaris"
         else 
            ARCH="unknown_sun"
         fi ;; 
      HP-UX )
         if [ `uname -r | cut -d "." -f 2` = "09" ]; then
            ARCH="hp700_9"
         elif [ `uname -r | cut -d "." -f 2` = "10" ]; then
            ARCH="hp700_10"
         else
            ARCH="unknown_hp"
         fi ;;
      Linux ) ARCH="i486" ;;
      * )     ARCH="unknown" ;;
   esac
   
   # set display
   case $ARCH in
      hp700_*)  options="-R" ;;
      sun )     options="" ;;
      solaris ) options="" ;;
      * )       options="" ;;
   esac
   if [ -z "$DISPLAY" ]; then
      dis=`who am i $options | sed -e "s/(//" -e "s/)//" | awk '{printf "%s",$6}'`
      case "$dis" in
          :[0-9].[0-9]) DISPLAY=`hostname`${dis%.0} ;;
         *:[0-9].[0-9]) DISPLAY=${dis%.0} ;;
               *:[0-9]) DISPLAY=$dis ;;
                     *) DISPLAY=${dis}:0 ;;
      esac
   else
      DISPLAY=${DISPLAY%.0}
   fi
   export DISPLAY

-- 
Lee Bradshaw                 lee@sectionIV.com (preferred)
Next Level Communications    bradshaw@nlc.com


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