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Operating Systems Linux Ubuntu Debug script
# 22  
Old 04-05-2019
I added a line to play a sound file.

The error text file says

Code:
VLC is not supposed to be run as root. Sorry.
If you need to use real-time priorities and/or privileged TCP ports
you can use /usr/bin/vlc-wrapper (make sure it is Set-UID root and
cannot be run by non-trusted users first).

Code:
#!/bin/bash 
#
# located in /lib/systemd/system-sleep/
# Created 4/2/19
exec 2> /tmp/systemd_suspend_test_err.txt

if [ "${1}" = "pre" ]; then
  # Do the thing you want before suspend here
  echo "we are suspending $(date +%I:%M:%S_%D)." 
elif [ "${1}" = "post" ]; then
  # Do the thing you want after resume here
   echo "and we are back from being suspended $(date +%I:%M:%S_%D)" 
  # gxmessage works IF xhost + is run first.
  gxmessage -timeout 5 -fg red -display :0 'Back from being suspended.'
  cvlc /usr/share/sounds/My_Sounds/Relax_6_Seconds.mp3
fi
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LEARN ABOUT REDHAT

lwp::debug

LWP::Debug(3)						User Contributed Perl Documentation					     LWP::Debug(3)

NAME

       LWP::Debug - debug routines for the libwww-perl library

SYNOPSIS

	use LWP::Debug qw(+ -conns);

	# Used internally in the library
	LWP::Debug::trace('send()');
	LWP::Debug::debug('url ok');
	LWP::Debug::conns("read $n bytes: $data");

DESCRIPTION

       LWP::Debug provides tracing facilities. The trace(), debug() and conns() function are called within the library and they log information at
       increasing levels of detail. Which level of detail is actually printed is controlled with the "level()" function.

       The following functions are available:

       level(...)
	   The "level()" function controls the level of detail being logged. Passing '+' or '-' indicates full and no logging respectively. Inidi-
	   vidual levels can switched on and of by passing the name of the level with a '+' or '-' prepended.  The levels are:

	     trace   : trace function calls
	     debug   : print debug messages
	     conns   : show all data transfered over the connections

	   The LWP::Debug module provide a special import() method that allows you to pass the level() arguments with initial use statement.  If a
	   use argument start with '+' or '-' then it is passed to the level function, else the name is exported as usual.  The following two
	   statements are thus equivalent (if you ignore that the second pollutes your namespace):

	     use LWP::Debug qw(+);
	     use LWP::Debug qw(level); level('+');

       trace($msg)
	   The "trace()" function is used for tracing function calls. The package and calling subroutine name is printed along with the passed
	   argument. This should be called at the start of every major function.

       debug($msg)
	   The "debug()" function is used for high-granularity reporting of state in functions.

       conns($msg)
	   The "conns()" function is used to show data being transferred over the connections. This may generate considerable output.

libwww-perl-5.65						    1997-12-02							     LWP::Debug(3)