UNIXPC communication questions

[William H. Huggins]

In article <678 at icus.islp.ny.us> lenny at icus.islp.ny.us (Lenny Tropiano) writes:
>In article <23118 at shemp.CS.UCLA.EDU> kirkaas at cs.ucla.edu (paul kirkaas) writes:
>|>switch to data or voice?  I mean, I want to write a script that is scheduled 
>|>by cron to make sure that the pc is is in a given mode at a given time.  I
>|>don't want to automatically toggle if it is already in the right mode.
>|>
>Yes, I did exactly that with a little utility.  Since it's small I'm reposting
>it again.  Basically it is invoked like:
>
>$ phset DATA   -or-   phset VOICE
>							-Lenny

A littler shell program  phnset (when linked to the names  
ph0set  and  ph1set)  which controls both  ph0  and  ph1,
and provides for restoring state to previous value:
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
# phnset -- writes prior state (D or V) on stdout and then
#           sets  ph[01]  to DATA (D)  or  VOICE (V) Rel 3.51

case $0 in
*ph0set) PHN=ph0 ;;
*ph1set) PHN=ph1 ;;
*phnset) echo "Invoke as ph0set or ph1set."
	 exit ;;
esac

case $# in
0)	cat <<-EOF
	Usage: ${PHN}set [ D | V ]
	       sets  $PHN  to  DATA  or  VOICE.
	EOF
	exit ;;
esac

if [ -f /usr/spool/uucp/LCK..$PHN ]	# is VOICE
then	echo V
        case $1 in
	d|D)	/usr/bin/phtoggle ;;
	v|V) ;;
	esac
else	echo D
        case $1	in			# is DATA
	d|D)	;;
	v|V)	/usr/bin/phtoggle ;;
	esac
fi
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

An example of use:

# USNOset -- reset clock from USNavalObservatory 
OM=`/usr/lib/uucp/ph0set D` 		# save prior ph0 mode
sleep 55				# to prevent retriggering
echo "On \c"; date			# time stamp
/etc/usnotime	2>&1			# set clocks stdout
sleep 5					# pause
OM=`/usr/lib/uucp/ph0set $OM`		# restore prior ph0 mode.


W.H. Huggins.
-- 
W.H. Huggins ECE Dept. 
Home: 8894780 (voice), 8895433 (data))