01-19-2007
control over shell script
Hi..
I have a perl program that uses "system" to execute a shell script called startengine. The script "startengine" itself calls a lot of other smaller scripts to setup the engine etc. It finally has to execute ./engine which is another shell script which is long and takes a long time to complete processing.
The "startengine" script looks like this
#!/bin/bash
echo In shell script............
/usr/agjy/bin/cleartool setview $1 <<END
cd /vobs/eng/work
. ./setup host-dbg gw
cd \$ENG_TARGET_ROOT/home/bin
pwd
/home/agjy/bin/stopAll
/home/agjy/bin/cleanup
./engine 2>&1 |tee $2
My problem is that the system call returns back to perl script without waiting for ./engine to finish processing..
I have tried sleep in the perl script which works only sometimes depending on machine speed. Another problem is that ./engine is a waiting process- ie if it runs correctly it should say "waiting for connection.. " and wait for input. the output of ./engine is written into the logfile ($2). The perl script then parses that
logfile looking for the "waiting for connection" string and proceeds to send input to the engine or shut it down depending on if string was matched or not.
I need something that will make sure ./engine is completely processed before control returns to perl script..
I hope i have made the problem clear and would really appreciate any help with this..
Thanks,
JLJ
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LEARN ABOUT DEBIAN
pppoe-setup
PPPOE-SETUP(8) System Manager's Manual PPPOE-SETUP(8)
NAME
pppoe-setup - Shell script to configure Roaring Penguin PPPoE client
SYNOPSIS
pppoe-setup
DESCRIPTION
pppoe-setup is a shell script which prompts you for various pieces of information and sets up an /etc/ppp/pppoe.conf configuration script
for the pppoe-start, pppoe-stop and pppoe-connect scripts.
AUTHOR
pppoe-setup was written by David F. Skoll <dfs@roaringpenguin.com>.
The pppoe home page is http://www.roaringpenguin.com/pppoe/.
SEE ALSO
pppoe(8), pppoe-start(8), pppoe-stop(8), pppoe-connect(8), pppd(8), pppoe.conf(5), pppoe-status(8), pppoe-sniff(8), pppoe-relay(8), pppoe-
server(8)
4th Berkeley Distribution 21 February 2000 PPPOE-SETUP(8)