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Full Discussion: How to run scripts parallely inside shell script?
Top Forums Shell Programming and Scripting How to run scripts parallely inside shell script? Post 302920962 by RavinderSingh13 on Tuesday 14th of October 2014 01:15:31 AM
Old 10-14-2014
Quote:
Originally Posted by vinothsekark
Hi ,

I have 4 scripts example script1,script2,script3,script4 .

I have to run script1,script2 and script3 parallely since this 3 scripts dont have dependencies .
Once script1,script2 and script3 got completed successfully , I have to trigger script4.

Can someone help me on this how to right script for this!!!

Thanks,
Vinoth
Hi vinothsekark,

You can try as follows, not tested though.

Code:
#!/bin/bash
./script1 &
./script2 &
./script3 &
Q=1
 
While (Q==1)
do
PID1=`ps -ef | grep -v grep | grep "script1"`
PID2=`ps -ef | grep -v grep | grep "script2"`
PID3=`ps -ef | grep -v grep | grep "script3"`
 
 
sleep 10 ## you can give here number of seconds as per you wish as not sure about how long scripts wil be taking to complete##
 
if [[ $PID1 == "" && $PID2 == "" && $PID3 == "" ]]
then
       ./script 4
       Q=0
else
       Q=1
fi
done

kindly try it in a non live environment as it is not tested and let us know.

EDIT: Sorry sea seems we have updated the post on same time didn't see your question.

Thanks,
R. Singh
Last edited by RavinderSingh13; 10-14-2014 at 02:37 AM.. Reason: Adding sorry, as sea asked a question to OP+edited space thanks to sea
 

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LEARN ABOUT OSF1

uudemon

uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME

       uudemon.admin,  uudemon.cleanu,	uudemon.hour,  uudemon.poll  -	Administrative shell scripts for polling remote systems, cleaning up spool
       directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons

SYNOPSIS

       These shell scripts reside in the following directory:
	  /usr/lib/uucp

DESCRIPTION

       All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the  scripts,  remove
       the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.

       This  script  reports  status  to  the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
       results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID  (uucpa)	or
       root.  This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
       mand is run with the following parameters: -C7, -D7, X2, -o2, -W1.  This script runs the uusched and uuxqt daemons in the background.  This
       script  polls  the  systems  listed  in	the  /usr/lib/uucp/Poll file.  The uudemon.poll script should be scheduled before the uudemon.hour
       script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.

FILES

       Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files.  Contains the uucp file.

RELATED INFORMATION

       Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)

       Files: /usr/lib/uucp delim off

																	uudemon(4)
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