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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(1)							   User Commands							  sleep(1)

NAME
sleep - suspend execution for an interval SYNOPSIS
/usr/bin/sleep /usr/bin/sleep time ksh93 sleep time DESCRIPTION
/usr/bin/sleep sleep suspends execution for at least the integral number of seconds specified by time. ksh93 sleep suspends execution for at least the time in seconds specified by time or until a SIGALRM signal is received. OPERANDS
/usr/bin/sleep The following operands are supported for /usr/bin/sleep: time time in seconds can be specified as a non-negative decimal integer number. ksh93 The following operands are supported: time Specify time in seconds as a floating point number. The actual granularity depends on the underlying system, normally around 1 mil- lisecond. EXAMPLES
Example 1 Suspending Command Execution The following example executes a command after a certain amount of time: example% (sleep 105; command)& Example 2 Executing a Command Every So Often The following example executes a command every so often: example% while true do command sleep 37 done ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of sleep: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 The execution was successfully suspended for at least time seconds, or a SIGALRM signal was received (see NOTES). >0 An error has occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin/sleep +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |Standard |See standards(5). | +-----------------------------+-----------------------------+ ksh93 +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Uncommitted | +-----------------------------+-----------------------------+ SEE ALSO
ksh93(1), wait(1), alarm(2), sleep(3C), wait(3UCB), attributes(5), environ(5), standards(5) NOTES
If the sleep utility receives a SIGALRM signal, one of the following actions is taken: o Terminate normally with a zero exit status. o Effectively ignore the signal. The sleep utility takes the standard action for all other signals. SunOS 5.11 20 Nov 2007 sleep(1)
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