I have a perl script on unix server and running it from windows machine. I have already synced the public key generated from windows machine to unix server so it does not ask for password.

ssh.exe username@xxx.xxx.xxx.xxx /fullpath/check_user_exists.pl userna
+me
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The remote perl script does checks weather the username name exists in a csv file in the unix server that's it. If it exists it exits with 0 otherwise 1.

This is run by all the users in my team it works most of the users for particular user it does not works. When I run this command via command line manually it return 0, but when I call via perl script it returns 255.

What could be the issue? how to debug this issue?

This is how i call this command locally from a perl script on windows side.

sub executeCommand{
  my $command = join ' ', @_;
  $prot and print("Command: $command\n");
  my $response = qx($command 2>&1);
  my $status = $? >> 8;
  return ($status, $response);
}

my @src_cmd = ('ssh.exe ', $ssh_user.'@'.$hostname ." /fullpath/check_
+user_exists.pl " . "$user");
my ($status, $output) = &executeCommand(@src_cmd);
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