if run command fails then do something...is there anything like that

[goodbyeplanet]

Let's try thinking about this a different way. Your goal of a program like this is...

1. Check to make sure HTTPD is running.

2. If not running - start it.

3. If HTTPD could not start, notify/log.

Correct?

here is my psuedocode

1). check to make sure apache is running

2). if not, then start apache using run command.

3). if run command fails to start apache then log results.

[ZacUSNYR]

Look at Varians code, should do exactly what you need I started to write something similar but he's mucho quicker then me. Same concept I was chasing, you don't need to verify it starts, you need to check to see if it's running after starting it.

[Varian]

ok here is what i have done. Maybe if somebody tells me why the msgbox output gives a result of o on the first run of the loop then i might somehow figure out my way forward. However on the second run of the loop the msgbox displays that apache has started. why is it like this. i am expecting that the run statement will start apache then wait for 2500 and give apache time to start then if it hits the second if statement i expect that the value of $apache will change since apache would have been started already.

First run: ProcessExists() returns 0 because the Process does not exist

Start the program, which starts the Process

Second run: ProcessExists() returns PID because the Process exists

This is exactly what is supposed to happen

[goodbyeplanet]

First run: ProcessExists() returns 0 because the Process does not exist

Start the program, which starts the Process

Second run: ProcessExists() returns PID because the Process exists

This is exactly what is supposed to happen

but look closely at my script it starts the process then wait for some seconds(waiting for the process to start) then when it hits the second if statement its still 0....does it mean that if a process starts and then test the variable before the script loops it will still be always 0 even if the process has started???

[Varian]

but look closely at my script it starts the process then wait for some seconds(waiting for the process to start) then when it hits the second if statement its still 0....does it mean that if a process starts and then test the variable before the script loops it will still be always 0 even if the process has started???

$Apache is still 0 because you never re-evaluated it again..I think this is what you meant to do

While 1
    $Apache = ProcessExists("httpd.exe")
    If $Apache = 0 Then
        Run(@ComSpec & " /c " & 'net start wampapache', "", @SW_HIDE)
        Sleep(2500)
        $Apache = ProcessExists("httpd.exe") ;Here, I checked Apache again, otherwise it would still be the same
        If $Apache = 0 Then
            MsgBox(4096, "", $Apache)
        EndIf
    EndIf
WEnd

EDIT: Take note, that if $Apache is not 0, the message box WILL NOT display

Edited January 13, 2011 by Varian

[goodbyeplanet]

thanks Verian for your help..i have seen your script and I have seen how you have used the Do..until statement. i have tried it and i am happy and very grateful for your help but for the sake of learning programming i still cannot understand why i get a zero on the script i posted before even after i have started the process and waited to make sure that the process starts. otherwise thank you every one for your help...love u lots...

Edited January 13, 2011 by goodbyeplanet

[Varian]

Read my previous post to understand

[goodbyeplanet]

Read my previous post to understand

ja thanks i posted before i saw your post..thanks Varian

[BrewManNH]

You're only checking to see if Apache is running once in the script. The second If statement is always going to be the same as the first If statement because of this. If you want to check to see if it's running after you start it with the Run command, you'll need to add a second $apache = ProcessExists("httpd.exe") statement after the sleep.

Edit: Didn't see it had gone to page 2 already

Edited January 13, 2011 by BrewManNH

[goodbyeplanet]

You're only checking to see if Apache is running once in the script. The second If statement is always going to be the same as the first If statement because of this. If you want to check to see if it's running after you start it with the Run command, you'll need to add a second $apache = ProcessExists("httpd.exe") statement after the sleep.

Edit: Didn't see it had gone to page 2 already

thanks soo much BrewManNH for your explnation.. Now I have learnt something today. yes its now 2 pages:) but thanks all for your patience..

[Newb]

now that script doesnt work, i tried it before

Just a useless punctualization, but then u can do the same thing you did in the script I tried to correct by using ElseIf instead of Else

[goodbyeplanet]

ok before i go to sleep i thought i would share my final script. I have tested it and i am happy. basically it brings together all the suggestions u brought out...I have increased the sleeping time so that it doesnt quickly fill up the log file. here it is below.

#include <file.au3>

While 1
    
    $sLogPath = ("c:\apachelog.txt")
    
    $sLogMsg1 = ("apache server started ")
    
    $sLogMsg2 = ("fatal error - script failed to start apache server")
    
    
    
    $Apache = ProcessExists("httpd.exe")
    
    If $Apache = 0 Then
        
        Run(@ComSpec & " /c " & 'net start wampapache', "", @SW_HIDE)
        
        Sleep(9500)
        
         _FileWriteLog($sLogPath, $sLogMsg1 )
        
        $Apache = ProcessExists("httpd.exe") 
        
        If $Apache = 0 Then
            
            _FileWriteLog($sLogPath, $sLogMsg2 )
            
        EndIf
        
    EndIf
    
WEnd