Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!bbn!oliveb!mipos3!omepd!merlyn
From: merlyn@iwarp.intel.com (Randal Schwartz)
Newsgroups: comp.unix.questions
Subject: overkill (was Re: How can a login script determine if the session is remotely logged in?)
Keywords: rlogin, script
Message-ID: <4689@omepd.UUCP>
Date: 24 Jul 89 15:57:42 GMT
References: <1448@tellab5.tellabs.CHI.IL.US> <1989Jul22.222552.11416@ctr.columbia.edu>
Sender: news@omepd.UUCP
Reply-To: merlyn@iwarp.intel.com (Randal Schwartz)
Distribution: usa
Organization: Stonehenge; netaccess via Intel, Hillsboro, Oregon, USA
Lines: 56
In-reply-to: seth@ctr.columbia.edu (Seth Robertson)

In article <1989Jul22.222552.11416@ctr.columbia.edu>, seth@ctr (Seth Robertson) writes:
| In article <1448@tellab5.tellabs.CHI.IL.US> rtm@tellab5.UUCP (Roberto Michelassi) writes:
| >
| >I am currently a ksh user running on a Sun 3/60 with SunOS 4.0 and would like
| >to add a feature to my .profile or .kshrc file that would update the tool 
| >header of the window to display the message "RLOGIN" when I remotely log into
| >another machine.
| Nothing easier!!!

heh heh

| (Of course I can't tell whether it is telnet or rlogin...)

Sure you can.  If you get a TERM type, you're rlogin, if not, itza
telnet.  But, the original request was for rlogin, so read on....

| 
| : {$tty:=`tty`}
| : {$pty:=`basename $tty`}
| 
| ##
| # Is this a pty (e.g. not console, dialup, or serial port
| 
| if echo $pty | grep ttyp > /dev/null 2>&1  ## Note Yuck!  Echo|grep??
| ## Also, if you have lots of ptys, you will need to search for
| ## more pseudo terminals than ttyp (e.g. ttyr ttys, etc.)
| 
|  then
| # Is this a login shell? (e.g. not su, not suntools, not emacs)
|   if basename $0 | grep -e "-ksh" > /dev/null 2>&1  ## Less yucky than before
|    then
|     echo This is a a remote session.
|     echo That is because is on a pseudo-terminal and was started
|     echo by login.  \(But not necessarily a rlogin\)
|    fi
|  fi

Too many processes... try:

case "$TERM" in
sun)
	case `tty` in
	*ttyp*)
		/usr/5bin/echo "\\033]lRLOGIN:`hostname`\\033\\\\";;
	esac;;
esac

NEVER EVER EVER make your .profile slow!  You'll regret it, over and
over again.

Just another UNIX (and now Sun) hacker...
-- 
/== Randal L. Schwartz, Stonehenge Consulting Services (503)777-0095 ====\
| on contract to Intel, Hillsboro, Oregon, USA                           |
| merlyn@iwarp.intel.com ...!uunet!iwarp.intel.com!merlyn	         |
\== Cute Quote: "Welcome to Oregon... Home of the California Raisins!" ==/