Hi Tom,
    Below is a versy simple CI script I put together demonstrating how a
unique user may be prevented from signing on twice. This can be placed in a
UDC or in a group in the name resolution path.

------------------------------------------------------------
anyparm ARG=!hpjobname,!hpuser.!hpaccount
setvar cnt 0
if lft(hpstdin,2)="$S"
   showjob > stdlist
   whoami !ARG < stdlist
   return
endif
setvar n finfo(hpstdin,"eof")
setvar num_user 0
while setvar (n,n-1) > 0
   if lft(setvar(buf,input()),1)='#'
      if setvar (pos, pos(ups("!arg"),buf)) > 0
         setvar num_user num_user + 1
      endif
   endif
endwhile
if num_user > 1
   echo !hpjobname,!hpuser.!hpaccount is already logged on...
   pause 5
   bye
else
   echo Welcome to your HPe3000....
endif

------------------------------------------------------------


                         Eric Sand
                         [log in to unmask]