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Top Forums Shell Programming and Scripting [Solved] Script doesn't work..help? Post 302753801 by vbe on Wednesday 9th of January 2013 11:22:35 AM
Old 01-09-2013
I just put your script in order ( for me to read...):
Code:
#! /bin/bash
while true
do
   proc_num=$(ps a | grep yourscript | wc -l)
   echo "loop1: "proc_num=$proc_num
   sleep 2
   while (( $proc_num < 5 ))
      do
         echo "loop 2: "proc_num=$proc_num
         sleep 2
         yourscript &      #add a single process
         #sleep 1 # - this is for testing purpose... -#
         #let proc_num=$proc_num+1
      done
   echo " out of loop 1 "
   sleep 1
done
#let something else use the box done

Comment:
ps -a doesnt give the same as ps a
you were missing a space after second while...
My question is more on line launching yourscript: does it go in background like a daemon or not? if it doesnt I see your program being stuck at this point ( but I may be wrong since I dont know what program it is...)

Last edited by vbe; 01-09-2013 at 12:27 PM..
This User Gave Thanks to vbe For This Post:
 

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SLEEP(3)								 1								  SLEEP(3)

sleep - Delay execution

SYNOPSIS
int sleep (int $seconds) DESCRIPTION
Delays the program execution for the given number of $seconds. PARAMETERS
o $seconds - Halt time in seconds. RETURN VALUES
Returns zero on success, or FALSE on error. If the call was interrupted by a signal, sleep(3) returns a non-zero value. On Windows, this value will always be 192 (the value of the WAIT_IO_COMPLETION constant within the Windows API). On other platforms, the return value will be the number of seconds left to sleep. ERRORS
/EXCEPTIONS If the specified number of $seconds is negative, this function will generate a E_WARNING. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.4 | | | | | | | Before PHP 5.3.4, on Windows, sleep(3) always | | | returns NULL when sleep has occurred, regardless | | | of whether the sleep was interrupted or not. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 sleep(3) example <?php // current time echo date('h:i:s') . " "; // sleep for 10 seconds sleep(10); // wake up ! echo date('h:i:s') . " "; ?> This example will output (after 10 seconds) 05:31:23 05:31:33 SEE ALSO
usleep(3), time_nanosleep(3), time_sleep_until(3), set_time_limit(3). PHP Documentation Group SLEEP(3)
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