I have script 3 scripts
1 parent
2 children
child1
child2
In the code below the 2 child processes fire almost Instantaneously in the background, Is that possible to know the status of pass/fail of each process "as it happens" ?
In the present scenario although Child2 failed first ( exit 1 ) the status is not displayed until Child1 is complete.
I would really apprecitate your help.
Mother Process:
Code:
#!/bin/bash
echo -e " Parent continued process 1"
echo -e " Parent continued process 2"
echo -e " ** Kicking off a child process C1** "
./child1 &
t1=$!
echo -e " Parent continued process 3"
echo -e " Parent continued process 4"
echo -e " ** Kicking off a child process C2** "
./child2 &
t2=$!
wait $t1
if [ $? -ne 0 ]
then
echo " Child Process C1 failed !!! "
fi
wait $t2
if [ $? -ne 0 ]
then
echo " Child Process C2 failed !!! "
fi
exit 0
Child1
Code:
#!/bin/bash
echo -e " in child process 1 "
sleep 2
echo -e " in child process 2 "
sleep 2
echo -e " in child process 3 "
sleep 7
exit 0 # success
Child 2
Code:
#!/bin/bash
echo -e " in child process 4"
echo -e " in child process 5"
echo -e " in child process 6"
exit 1 # failed
Thanks,
SSR.
Last edited by otheus; 04-28-2009 at 09:37 AM..
Reason: Please use code tags instead of font tags
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Discussion started by: capo2ndfret
1 Replies
LEARN ABOUT OPENSOLARIS
echo
echo(1B) SunOS/BSD Compatibility Package Commands echo(1B)NAME
echo - echo arguments to standard output
SYNOPSIS
/usr/ucb/echo [-n] [argument]
DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.
echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
ronment variables.
For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:
o echo your current-working-directory's full pathname
o pipe the output through tr to translate the path's embedded slash-characters into space-characters
o pipe that output through wc -w for a count of the names in your path.
example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"
See tr(1) and wc(1) for their functionality.
The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if
the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's
echo() also understands a as the audible bell character; however, these commands do not have an -n option.
OPTIONS -n Do not add the NEWLINE to the output.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases.
SunOS 5.11 3 Aug 1994 echo(1B)
04-27-2009
