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Full Discussion: Help with shell script handling processes
Top Forums Shell Programming and Scripting Help with shell script handling processes Post 302966312 by cjcox on Wednesday 10th of February 2016 05:29:21 PM
Old 02-10-2016
Code:
#!/bin/bash

maxnum=6

# Initial load
c=1
while [ $c -le $maxnum ]; do
    read line || exit
    echo "$line" | sh &
    p[$c]=$!
    echo ${p[$c]}
    ((c++))
done

# Loop through all, if dead read and start new
while read line; do
    echo "$line"

    q=1
    while [ $q ]; do
        c=1
        while [ $c -le $maxnum ]; do
           kill -0 ${p[$c]} 2>/dev/null
           if [ $? -ne 0 ];then
               echo "$line" | sh &
               p[$c]=$!
               echo "run $c"
               q=""
               break
           fi
           ((c++))
        done
    done
done
# don't exit till remaining background jobs complete
wait

This User Gave Thanks to cjcox For This Post:
JackyShane_36
 

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LEARN ABOUT SUSE

echo

ECHO(1) 							   User Commands							   ECHO(1)

NAME

       echo - display a line of text

SYNOPSIS

       echo [SHORT-OPTION]... [STRING]...
       echo LONG-OPTION

DESCRIPTION

       Echo the STRING(s) to standard output.

       -n     do not output the trailing newline

       -e     enable interpretation of backslash escapes

       -E     disable interpretation of backslash escapes (default)

       --help display this help and exit

       --version
	      output version information and exit

       If -e is in effect, the following sequences are recognized:

       NNN  the character whose ASCII code is NNN (octal)

       \     backslash

       a     alert (BEL)

            backspace

       c     produce no further output

       f     form feed

       
     new line

       
     carriage return

       	     horizontal tab

       v     vertical tab

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

AUTHOR

       Written by Brian Fox and Chet Ramey.

REPORTING BUGS

       Report echo bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2009 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

       The full documentation for echo is maintained as a Texinfo manual.  If the info and echo programs are properly installed at your site,  the
       command

	      info coreutils 'echo invocation'

       should give you access to the complete manual.

GNU coreutils 7.1						     July 2010								   ECHO(1)
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