topic clock in Operating System - HP-UX

clock

Khashru — Sun, 12 Feb 2006 21:15:01 GMT

I want to add a clock in a script. the script is used for showing menu. I want that the time will be changed after 5 sec. how can i do that

System Name : hpdev Time :

Choose one of the following option:

[P] for Password Change
[U] for Unlock user
[E] for Exit

Re: clock

Muthukumar_5 — Mon, 13 Feb 2006 01:33:59 GMT

Do you want to change the time after 5 sec eventhough the input is given for Choose or not?

It is easy to change the time with clear command as like,

while [[ 1 ]]
do

echo "System Name: `hostname` Time: `date`"
echo "Choose"
echo "[P] for Password Change
[U] for Unlock user
[E] for Exit"
read OPTION

# Use some function to do operation.
here...()
clear

sleep 5

done

--
Muthu

Re: clock

Elmar P. Kolkman — Mon, 13 Feb 2006 02:53:30 GMT

You can use this as a base for what you want. Mind that it will 'destroy' old traps you set !

But it will print out the date every 5 seconds.

#!/bin/ksh
trap '/usr/bin/date' HUP

( while true
do
kill -HUP $$
sleep 5
done
) &

ss=$!

trap '/usr/bin/kill $ss' INT

read a

kill $ss

Re: clock

Bill Hassell — Mon, 13 Feb 2006 08:53:54 GMT

If you want the script to respond to the menu commands and at the same time, update the time, the script will be quite tricky to implement. Essentially, you would wait for input for up to 5 seconds, then if nothing was typed, redisplay the header which includes the date. Be sure to use $(date) rather than the obsolete grave accents `date` as it is very easy to mistype the characters. The date command has many options to show just hour:min or add secs, etc. To timeout the read command, see the man page for line.