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Full Discussion: How to get script to wait until status is true before continuing?
Top Forums Shell Programming and Scripting How to get script to wait until status is true before continuing? Post 302811545 by DGPickett on Thursday 23rd of May 2013 04:20:29 PM
Old 05-23-2013
Well, usually you can arrange to be parent to things you want to monitor. Basic sh, ksh, bash have wait, which wait for all unless you provide one or more pid. Man Page for wait (all Section 1) - The UNIX and Linux Forums Wait will set $? according to the exit of the waited child, so I like to make a pid list and use a for loop to wait for and report on each. After all, if you are waiting for all N, it does not matter which you sense first. If you want to get the exit time, you can create a wait on each in the background, and wait on that list.
Code:
date "+%Y-%m-%d %H:%M:%S ${0##*/) ($$) Start apps."
( # subshell only waits for subshell's children
for prog in prog1 prog2 prog3
do
( $prog  ; date '+%Y-%m-%d %H:%M:%S ${0##*/) ($$) Exit $! $prog." )&
done
wait
) >logfile 2>&1   # subshell also collects all stdout, stderr for log

 

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LEARN ABOUT OSF1

uudemon.cleanu

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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