Wait for one processes to complete in a shell script


 
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# 1  
Old 06-19-2013
Wait for one processes to complete in a shell script

Let's say I start process A.sh, then start process B.sh. I call both of them in my C.sh
How can I make sure that B starts its execution only after A.sh finishes.
I have to do this in loop.Execution time of A.sh may vary everytime.
It is a parameterized script.
# 2  
Old 06-19-2013
Unless you run a.sh with a '&', it should wait for a.sh to complete to start b.sh. you may also give a sleep time after a.sh and b.sh just to be sure.

Post your script snippet for better answers.
# 3  
Old 06-19-2013
Quote:
Originally Posted by rajamadhavan
Unless you run a.sh with a '&', it should wait for a.sh to complete to start b.sh. you may also give a sleep time after a.sh and b.sh just to be sure.

Post your script snippet for better answers.
Code:
for i in `cat sql_output.txt`
do
echo "bip $i is running"
cd $SCRIPT_DIR
sh bip.sh 01 3 $i > /arbor/integ_fx/rahul_raj/itsr_5652/bip.txt
sleep 90
BILL_REF=`tail -2  /arbor/integ_fx/rahul_raj/itsr_5652/bip.txt | head -1 | cut -d  " " -f  6`
cd /arbor/integ_fx/xit_dev_CH/bin
ksh runXitInvoice_PROFORMA_integ  $BILL_REF 0 bp > /arbor/integ_fx/rahul_raj/itsr_5652/PROFORMA_integ.txt
done

I think bip.sh is designed to run in background.
Current workaround i am using is sleep but i want to avoid it.
Thanks
# 4  
Old 06-19-2013
This is the third thread with your identical problem. Please share bip.sh! In above code snippet, bip.sh DOES NOT RUN in background!
# 5  
Old 06-19-2013
Quote:
Originally Posted by RudiC
This is the third thread with your identical problem. Please share bip.sh! In above code snippet, bip.sh DOES NOT RUN in background!
Hi Rudi,
Just shared the BIP in my other post

---------- Post updated at 05:28 PM ---------- Previous update was at 12:21 PM ----------

Quote:
Originally Posted by RudiC
This is the third thread with your identical problem. Please share bip.sh! In above code snippet, bip.sh DOES NOT RUN in background!
Hi here is the content of bip

Code:
#!/bin/sh
ARBOR_DB_PASSWD=`cat $ARBORDIR/.arborpw`; export ARBOR_DB_PASSWD
DB_PASS=$ARBOR_DB_PASSWD; export DB_PASS;
ORACLE_SID=$ARBOR_CATALOG_DATABASE; export ORACLE_SID;
ARBORCTRLRPT03=$ARBORDATA/reports/ctrl; export ARBORCTRLRPT03;

Usage(){
  echo "\n\n  Usage is: `basename $0` <proc_num> <bip mode> <account_no>\n"
  echo "  where <proc_num> is a number between 01 and 99"
  echo "        <bip_mode> is a number. Use 0=production, 3=proforma, 6=backout"
  echo "        <bip_mode> is an arbor accout number\n\n"
  exit 0
}

#  Check number of arguments
if [ "$#" -ne 3 ] ; then
  Usage
fi

# Check to see if ARBORDBU is set
if [ -z "${ARBORDBU}" ] ; then
        echo "ERROR: \$ARBORDBU environment variable is not set\n"
        echo "This script requires that the \$ARBORDBU environment variable be set.\n\n"
        exit 1
fi

# Check to see if DB_PASS is set
if [ -z "${DB_PASS}" ] ; then
        echo "ERROR: \$DB_PASS environment variable is not set\n"
        echo "This script requires that the \$DB_PASS environment variable be set.\n\n"
        exit 1
fi

# Check to see if ORACLE_SID is set
if [ -z "${ORACLE_SID}" ] ; then
        echo "ERROR: \$ORACLE_SID environment variable is not set\n"
        echo "This script requires that the \$ORACLE_SID environment variable be set.\n\n"
        exit 1
fi

# Set the variables for arguments passed by the user
PROCNAME=bip$1
BIP_MODE=$2
ACCOUNT=$3

# Get the database from the user's environment
DB=$ORACLE_SID

# Set this so that the process doesn't try to connect to Operations Center
OAM_ENV_CONN_MA=FALSE
export OAM_ENV_CONN_MA


# Log into sqlplus, delete any existing entries, and make the new entry
sqlplus -s $ARBORDBU/$DB_PASS@$DB <<END

update SYSTEM_PARAMETERS set int_value=1 where module='BIP' and parameter_name='TRA_SWITCH';
delete from PROCESS_SCHED where process_name = '$PROCNAME';
delete from PROCESS_STATUS where process_name = '$PROCNAME';
insert into PROCESS_SCHED values('$PROCNAME','$PROCNAME','N',$BIP_MODE,SYSDATE,86400,0,2,55,'$DB','CMF.account_no in ($ACCOUNT)',1,NULL,0,NULL,0);
commit;
exit

END

echo "Starting BIP in the background with process name = \"$PROCNAME\""
BIP $PROCNAME 3 &

Moderator's Comments:
Mod Comment Please use CODE tags for multi-line code, input, and output samples instead of ICODE tags.

Last edited by Don Cragun; 06-20-2013 at 12:31 AM.. Reason: Changed ICODE tags to CODE tags.
# 6  
Old 06-19-2013
Write the entire part below in your c.sh. This should solve your problem. Small modifictions may be required depending upon necessity



function mySleep
{
ps -fu $LOGNAME|grep a.sh|grep -v grep 2>>/dev/null
if [ $? -ne 0 ]
then
echo "a.sh still running...."
echo "sleeping for 2 seconds!!!"
sleep 2
mySleep
}



a.sh
mySleep
b.sh
This User Gave Thanks to mritusmoi For This Post:
# 7  
Old 06-19-2013
Quote:
Originally Posted by mritusmoi
Write the entire part below in your c.sh. This should solve your problem. Small modifictions may be required depending upon necessity



function mySleep
{
ps -fu $LOGNAME|grep a.sh|grep -v grep 2>>/dev/null
if [ $? -ne 0 ]
then
echo "a.sh still running...."
echo "sleeping for 2 seconds!!!"
sleep 2
mySleep
}



a.sh
mySleep
b.sh

Thanks for the reply.

Can you explain what your code is doing.I am new to unix
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