Commits on Apr 6, 2017

1. Suppress debug messages on ZM service start/restart …

   The tests in the script General.pm that determine the format for superuser calls on the target environment may leak debug messages to STDOUT. This can be replicated on a Docker installation of Zoneminder lacking sudo. Starting the Zoneminder process  will display an intimidating series of error messages that can safely be ignored by the user:
   
   e.g.
   '''
   root@2bfdd23cc27a:~# service zoneminder start
   
   Starting ZoneMinder: Can't exec "sudo": No such file or directory at /usr/share/perl5/ZoneMinder/General.pm line 1                                                   10.
   Use of uninitialized value $output in scalar chomp at /usr/share/perl5/ZoneMinder/General.pm line 119.
   Use of uninitialized value $output in concatenation (.) or string at /usr/share/perl5/ZoneMinder/General.pm line 1                                                   20.
   success
   '''
   
   This patch redirects STDERR from the qx(...) calls to the debug message., And if the output of qx(...) is undefined, replaces it with any error in $! resulting from the qx(...) call.

   

   ekwoodrich committed Apr 6, 2017
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