JasonDavis has asked for the wisdom of the Perl Monks concerning the following question:

I would like to stop a service using Win32:StopService but not by the service name, rather the number assigned to it when passing a list of started services to an array. This is the code which I've done so far - it works on the service name but i don't know how to do via the array number assigned to it.

use strict; my $cons; my %service; my %status; my $CONSOLE; my $key; my $continue="y"; my $option; my @sorted; my $counter=0; my $stop; my $start; my $current_date; my $input; my $kill; my $running; my $service_name; my $user_selection; my $hostname; my %codes; my %services; my $service; my $codes; my %statcode; use Win32::Console; use Win32::Service; Win32::Service::GetServices("", \%service); my @sorted=sort(keys(%service)); $cons = Win32::Console->new (STD_OUTPUT_HANDLE); $current_date = localtime(time); %codes = ( 1 => "Stopped.", 2 => "Starting.", 3 => "Stopping.", 4 => "Running.", 5 => "Continue.", 6 => "Pausing.", 7 => "Paused.", 8 => "Unknown.", 9 => "Unknown." ); while ($continue eq "y") { $cons->Cls(); print "\n\n\n\n"; print "\t----------------------------------------------------\n"; + #Menu heading print "\t \t Windows Services Status Viewer\n"; print "\t----------------------------------------------------\n\n" +; print "\t 1. Service names started in ascending order.\n"; print "\t 2. Service names stopped in ascending order.\n"; print "\t 3. Exit.\n\n"; print "\t----------------------------------------------------\n"; + #Menu heading print "\t \t\t Version 1.0\n"; print "\t \t $current_date\n"; print "\t----------------------------------------------------\n\n" +; print "\n\n\t\t Select option (1 to 3) = "; my $option=<STDIN> ; if ($option == 1) { started(); } else { if ($option == 2) { stopped(); } else { if ($option == 3) { print "\t--------------------------------------------- +-------\n"; print "\t \t\t Goodbye print "\t--------------------------------------------- +-------\n\n"; $continue="n"; } else { if ($option != [1-3]) { print "Please enter a valid a valid option (1 - 3) +\n"; system ("pause"); } } } } } sub started { $counter=0; foreach $key(@sorted) { $counter++; @sorted=sort(keys(%service)); Win32::Service::GetStatus("", $service{$key}, \%status +); if ($status{CurrentState} == 4) { print "\t$counter\t$key\n" ; } } print "Please enter the number of the service to terminate +:\n"; chomp($user_selection = <STDIN>); Win32::Service::GetServices ("", \%service); foreach (sort(keys(%service))) { $service_name = $_; Win32::Service::GetStatus ("", $service{$key}, \%statu +s); $running = $status{"CurrentState"}; if (("$service_name" eq "$user_selection") and ("$running" eq "4")) { print "$service_name $codes{$running} and will be +stopped\n"; Win32::Service::StopService ("", $service_name); print "$service_name has been stopped! \n"; } } }

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Re: Stopping Service with Win32::StopService
by GrandFather (Saint) on Jun 26, 2008 at 12:35 UTC

    First off, remove all the declarations at the start of the program and only declare variables at the point you actually need them. One of your problems is that various variable (especially $key) don't contain what you hope they will.

    You don't need to interpolate variables into strings to do stuff with them. Use $service_name eq $user_selection rather than "$service_name" eq "$user_selection".

    A reworked version of your code that seems to work follows:


    Perl is environmentally friendly - it saves trees
      Thank you very much. Your advice makes it a lot easier to understand compared to what I was doing before. Is there anyway to test that the service has indeed stopped? or check that it isn't stopped to begin with? Regards, Jason.
        Is there anyway to test that the service has indeed stopped? or check that it isn't stopped to begin with?

        Type net start at a command prompt and it will list the services that are currently running.


        Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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Re: Stopping Service with Win32::StopService
by Rabbi Bob (Scribe) on Jun 26, 2008 at 10:52 UTC
    I'm running out the door to work:

    Check for ';' at line 74 after the print Goodbye.

    First thought after running it and throwing in a line to reflect the associated chosen number with the actual services is that it isn't one for one (the number I chose appeared to be a service that was not running) within your current code, which I realize is what you're going for. Got to run...