[SunHELP] $DISPLAY for root

[David Ledger]

The snippet is for ksh or a posix sh which should both understand 
'$(<command>)' and '$((<arith-expr>))'

a Bourne or csh will give that error.

I did cut & paste from a working ksh script.  It could be translated 
to csh, but not by me.  Havn't used it for nearly 15 years.

David


>From: "David Baldwin" <dbaldwin at networkinsight.com>
>
>I threw that snip in my /etc/profile but when I ". /etc/profile" I get a
>syntax error.  ( is unexpected.  I checked that they all match up
>properly but I can't find where the problem is.  I am working on my
>shell scripting but I am by no means good at it.  Is there something
>else that needs to happen first?
>
>Thanks for all the help
>Dave Baldwin
>
>
>
>-----Original Message-----
>From: David Ledger [mailto:dledger at ivdcs.demon.co.uk]=20
>Sent: Thursday, August 16, 2001 6:56 AM
>To: sunhelp at sunhelp.org
>Subject: RE: [SunHELP] $DISPLAY for root
>
># Set the DISPLAY global environment variable.
>	if [ ! "$DISPLAY" ]; then
>	       set -A DISPLAY $(who -um)
>	       DISPLAY=3D${DISPLAY[$((${#DISPLAY[*]} - 1))]}
>	       DISPLAY=3D${DISPLAY%:0.0}:0.0
>	       export DISPLAY

In a 'sh' derived shell you '.' for source, as David did.  'source' 
is csh speak.

>From: Ben Ricker <bricker at wellinx.com>
>
>You do not execute a .profile, you use the command 'source'. Read up on
>man source.

-- 
David Ledger - Freelance Unix Sysadmin in the UK.
Chair of SysAdmin SIG of HP/Works technical user group
dledger at ivdcs.co.uk (also dledger at ivdcs.demon.co.uk)
www.ivdcs.co.uk