Without seeing any code all I can do is guess.

My guess is that you are opening your logfile with a relative path name, like:

open my $log_fh, './log/mylogfile.log'
    or die $!;
[download]

But when your task runs, the current directory is not what you think it is.

Alternatively, you are running your task under the SYSTEM account and try to wite to a network drive. The local account is not allowed to write to network drives.

You are right. I just realized that, My inputfile and outputfile path both like /xx/xx.log, but Windows does not recognize this path. How I could resolve it? my code is

 #!perl
use strict;
use autodie;
use Win32::Service qw'GetServices GetStatus StartService';
use POSIX;

my @state_name =  qw( UNKNOWN Stopped START_PENDING STOP_PENDING
                      Started CONTINUE_PENDING PAUSE_PENDING
                      PAUSED  ERROR  );
my $date = strftime("%Y-%m-%d", localtime);
my ($shortname, %status, $state_no);

my $filename = '/Users/Documents/Traning/Perl/XiServiceList.txt';
open FILE, '<', $filename;# autodie
my $hostname = <FILE>;
chomp $hostname;
open MYFILE, ">>", "/Users/Documents/Traning/dailycheck\_$date\.log";
print MYFILE "Checking Services available for '$hostname'\n";
my %available=();
GetServices($hostname,\%available) or die "$!";

# add short names
$available{$_} = $_ for values %available;

print MYFILE "Checking services in list\n";
[download]

I tried to modify the path like c\:/Users/Documents/Traning/dailycheck\_$date\.log, it does not work on command, I have not tested in windows scheduler. Thanks!

my $path     = 'C:/Users/Documents/Traning';
my $filename = $path.'/Perl/XiServiceList.txt';
my $logfile  = $path."/dailycheck_$date.log";
.
.
open MYFILE, ">>", $logfile;
[download]

Note : Is it not c:/users/username/documents/Traning?

poj

Hello ytjPerl,

We need to see you code. What you have tried? Did you try to trigger it manually, is it working? If so did you try to trigger it vua the scheduler is not working?

Give us sample to play around.

Looking forward to your reply, BR.

I wrote a script to check service status one time and output it into file. Now I need it to repeat checking interval, so I am trying to use windows scheduler to schedule this task running of my choice. But I did not get any output from it.

Hello again ytjPerl,

The only way to know what you mean, is to see sample of your code. We can not help you differently. Or at least I can not help you maybe another monk could.

Looking forward to your update, BR.

Seeking for Perl wisdom...on the process of learning...not there...yet!