LinuxQuestions.org - [SOLVED] need help writing a script

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need help writing a script

ok here's the jist of the problem...

Im using mjpg_streamer for live video over a network, how-ever for some reason it gets buffer errors which i cannot seem to fix, no biggie, all that happens is the proccess quits, which kills the video feed..

I have made a service script that will check if the proccess is running and if it is it does nothing, if its not running, it'll restart it...

Now i wanted to add it to cron but thats pointless as cron works only every minute, not seconds..

Im wanting someone to help me write a simple script that will run the service i have created every 20 seconds or so...

I have no idea howto etc... the current script is one i found online and changed a few things too...

how do i go about this... google only returns info that is useless to me because i dont understand what they are trying to do etc...

Hello,

I think the simplest solution is to run your commands using a loop structure in combination with a sleep command. Have a look at this man page for sleep.

It might also help us if you post what you have got as script.

Kind regards,

Eric

You could throw the 'sleep' command in your script.

here's my script - its also a service

Code:

#!/bin/bash

RESTART="/etc/init.d/myscript.service start"

PGREP="/usr/bin/pgrep"

$PGREP mjpg_streamer || $RESTART

Code:

while 1

do

    $PGREP mjpg_streamer || $RESTART

    sleep 20

done

Quote:

Originally Posted by grail (Post 3977339)

Code:

while 1

do

    $PGREP mjpg_streamer || $RESTART

    sleep 20

done

launching from terminal i get

Code:

mjpg-restarter.sh: 7: 1: not found

My bad, forgot the brackets. Place some round brackets around the 1

Or use while true

Thanks for the help guys...

got it working... using the 1 method didnt work, but swapping it for the "true" statement has....

Cheers guys