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Full Discussion: Issue with tracking successful completion of Child process running in background
Top Forums UNIX for Advanced & Expert Users Issue with tracking successful completion of Child process running in background Post 302983075 by Juha Nurmela on Thursday 6th of October 2016 04:28:57 AM
Old 10-06-2016
Your inner script looks kind of funny: you start a command, and wait for it to end. Maybe you have your reasons, but wouldn't
Code:
if hive ... # (without &)
then
     echo Success
     exit 0
fi
echo Failure
exit 1

have done the same with less fuss?

Juha

---------- Post updated at 11:28 AM ---------- Previous update was at 10:59 AM ----------

Also, aren't you making things too complicated, how about
Code:
for i in 1 4 2 3
do
        (
        echo Scripted error message >&2
        ls nonexistent
        sleep $i
        ) 1> out_$i 2> err_$i &
done

wait # all of them

for i in 1 4 2 3
do
        if [ -s err_$i ]
        then
                echo Check errors in err_$i
        fi
done

 

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LEARN ABOUT SUNOS

echo

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							    echo(3XCURSES)
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