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Full Discussion: Help with finding the exit status of a 'nohup' command using 'PID'.
Top Forums Shell Programming and Scripting Help with finding the exit status of a 'nohup' command using 'PID'. Post 302917691 by SriRamKrish on Thursday 18th of September 2014 08:38:23 AM
Old 09-18-2014
Help with finding the exit status of a 'nohup' command using 'PID'.
Hello All,

I need to run a set of scripts, say 50 of them, parallely. I'm running these 50 scripts, from inside a script with the help of 'nohup' command.

1.The fifty scripts are stored in a separate file.
2.In a master script, i'm reading every line of the file through loop and executing them.
3.The master script should succeed, if and only if, all the 50 scripts that has been called succeeds. Or else should fail.(Exit 0)

So far, this is what i have tried :

Code:
 
failcount=0
passcount=0
 
while read line; do
nohup sh $line &
PID=$(echo $!)
wait $PID
status=$(echo $?)

if [ $status -eq 100 ]
        then
        echo "Script FAILED." >> ${logfile}
        failcount=$((failcount+1))
elif [ $status -eq 0 ]
        then
        echo "Script SUCCEEDED." >> ${logfile}
        passcount=$((passcount+1))
fi
done < /$PATH/script.txt
 
if [ $failcount -gt 0 ]
        then
        echo "FAILURE!" >> ${logfile}
        exit 1
else
        echo "SUCCESS!" >> ${logfile}
        exit 0
fi

But this runs the scripts sequentially and NOT parallely. I need to start all the scripts parallely using nohup(or any other means if possible) and should be able to track their exit status individually.

Kindly help.

Cheers.
Last edited by vbe; 09-18-2014 at 09:44 AM..
 

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LEARN ABOUT PHP

nohup

NOHUP(1)                                                           User Commands                                                          NOHUP(1)

NAME

       nohup - run a command immune to hangups, with output to a non-tty

SYNOPSIS

       nohup COMMAND [ARG]...
       nohup OPTION

DESCRIPTION

       Run COMMAND, ignoring hangup signals.

       --help display this help and exit

       --version
              output version information and exit

       If  standard  input  is a terminal, redirect it from an unreadable file.  If standard output is a terminal, append output to 'nohup.out' if
       possible, '$HOME/nohup.out' otherwise.  If standard error is a terminal, redirect it to standard output.   To  save  output  to  FILE,  use
       'nohup COMMAND > FILE'.

       NOTE: your shell may have its own version of nohup, which usually supersedes the version described here.  Please refer to your shell's doc-
       umentation for details about the options it supports.

AUTHOR

       Written by Jim Meyering.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report nohup translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       Full documentation at: <http://www.gnu.org/software/coreutils/nohup>
       or available locally via: info '(coreutils) nohup invocation'

GNU coreutils 8.28                                                 January 2018                                                           NOHUP(1)
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