Sponsored Content
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:
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

signal handling in shell script

Hi can any please tell me is it possible to catch the signal in a shell script like we do in C. if yes please give me some idea or a link. (4 Replies)
Discussion started by: Raom
4 Replies

2. Shell Programming and Scripting

Shell script creating too many processes.

I have a shell script that I am running every 60 seconds, but it is creating this process to the point that it is causing the server to perfrom poorly. Below is my script, what can I change to prevent this? while true do java -classpath .....( all my classes here) >/dev/null 2>&1 ... (3 Replies)
Discussion started by: Miller_K
3 Replies

3. Shell Programming and Scripting

Shell script file handling

Hi ! /bin/sh set logdir1 "logDir/local/logname" #write the filename into a file echo $logdir1 >> logname.txt how do i exec the above echo command (1 Reply)
Discussion started by: nathgopi214
1 Replies

4. Shell Programming and Scripting

shell script for getting pid of spawn processes from shell

Hi, I am new this forum. I request you peoples help in understanding and finding some solution to my problem. Here it goes: I need to perform this set of actions by writing a shell script. I need to read a config file for the bunch of processes to execute. I need to fecth the pid of... (4 Replies)
Discussion started by: sachin4sachi
4 Replies

5. Shell Programming and Scripting

BASH - Handling background processes - distributed processing

NOTE: I am using BASH and Solaris 10 for this. Currently in the process of building a script that has a main "watcher" daemon that reads a configuration file and starts background processes based on it's global configuration. It is basically an infinite loop of configuration reading. Some of the... (4 Replies)
Discussion started by: dcarrion87
4 Replies

6. Shell Programming and Scripting

Help with Handling multiple argument in shell script

Hi i have written a shell script that takes only single ip address from the user and calculates its latency and reliability, can you please tell me that what should be done if i want that user should enter 100 or 1000 ip address (5 Replies)
Discussion started by: Preeti_17
5 Replies

7. Shell Programming and Scripting

Shell script executed from Informatica ETL tool is spawning 2 processes for one script

Hi, I am having a shell script which has a while loop as shown below. while do sleep 60 done I am executing this script from Informatica ETL tool command task from where we can execute UNIX commands/scripts. When i do that, i am seeing 2 processes getting started for one script... (2 Replies)
Discussion started by: chekusi
2 Replies

8. Solaris

Script on Solaris spawning 2 processes for one shell script execution

Hi, I am having a shell script on Solaris 10 which has a while loop as shown below. #!/usr/bin/ksh # while do sleep 60 done Name of the shell script is coldcentric.sh. I executed script /DATAWAREHOUSE/LOAD/Scripts/coldcentric.sh from a command task in Informatica worklow as... (3 Replies)
Discussion started by: chekusi
3 Replies

9. Shell Programming and Scripting

Wait for one processes to complete in a shell script

Let's say I start process A.sh, then start process B.sh. I call both of them in my C.sh How can I make sure that B starts its execution only after A.sh finishes. I have to do this in loop.Execution time of A.sh may vary everytime. It is a parameterized script. (17 Replies)
Discussion started by: rafa_fed2
17 Replies

10. Shell Programming and Scripting

Issue handling single quoted argument in shell script.

Below is my script that works fine and prints the desired output: #!/bin/ksh echo "$1" | while IFS= read -r dirpath do echo "DIRR_PATH:$dirpath" install_dir=$install_dir" "$dirpath done echo "Desired Output:$install_dir" Output: ./loopissue.sh... (10 Replies)
Discussion started by: mohtashims
10 Replies
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 5.10 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 08:27 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy