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Full Discussion: Restart script based on MD5sum
Top Forums Shell Programming and Scripting Restart script based on MD5sum Post 302272986 by Bakes on Friday 2nd of January 2009 08:19:09 AM
Old 01-02-2009
Restart script based on MD5sum
Ok, I run a small script, that restarts a perl script when it fails (it's a very unreliable perl script, but I can't change it, it's crucial, and I don't know perl)
It outputs data into a logfile. Unfortunately, it also regularly hangs. This is a major problem because if it hangs, no data is written to the logfile (which is parsed by a python script). So, what I want to do, is to MD5sum the logfile every 30 seconds, and if the md5sum is the same as the md5sum the half minute before, to restart the script. How might I do this?
 

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LEARN ABOUT SUSE

gst-md5sum-0.8

gst-md5sum-0.8(1)						   User Commands						 gst-md5sum-0.8(1)

NAME

       gst-md5sum-0.8, gst-md5sum - get an md5sum of a GStreamer pipeline through md5sink

SYNOPSIS

       gst-md5sum-0.8 [--verbose] [gst-std-options] [partial-pipeline-description]

       gst-md5sum [--verbose] [gst-std-options] [partial-pipeline-description] [--gst-list-mm] [--gst-mm=string] [--print]

DESCRIPTION

       gst-md5sum-0.8 generates MD5 checksums of the data generated by a GStreamer pipeline.

       In theory, both of the following commands should print out the same checksum:

       gst-md5sum-0.8 filesrc location=music.mp3

       md5sum music.mp3

       If  the	pipeline  contains  an md5sink element, gst-md5sum-0.8 queries it for the md5sum at the end of pipeline iteration. If the pipeline
       does not contain an md5sink element, gst-md5sum-0.8 automatically connects an md5sink to the right-hand side of the given pipeline.

       See gst-launch(1) or the GStreamer documentation for more information on how to create a partial-pipeline-description.

       gst-md5sum is a wrapper script that runs the latest installed version of gst-md5sum-X.X. For  example,  if  both  gst-md5sum-0.7  and  gst-
       md5sum-0.8 are installed on your system, gst-md5sum runs gst-md5sum-0.8.

OPTIONS

       The following options are supported by gst-md5sum-0.8 and gst-md5sum:

       --verbose       Output verbose information. You can also use -v to specify this option.

       gst-std-options Standard options available for use with most GStreamer applications.  See gst-std-options(5) for more information.

       The following options are supported by gst-md5sum only:

       --gst-list-mm   List found major/minor versions. This option displays the versions that are available.

       --gst-mm=string Force  major/minor  version.  This  option  enables you to specify a specific version to run, if you do not want to run the
		       default version.

       --print	       Print wrapped command line. This option displays the command that will be run, and then runs the command.

OPERANDS

       The following operands are supported:

       partial-pipelinePartialppipeline description.

EXAMPLES

       Example 1: Running the Wrapper Script and Displaying the Command Name

       example% gst-md5sum --print
       /usr/bin/gst-md5sum-0.8

FILES

       The following files are used by this application:

       /usr/bin/gst-md5sum-0.8 Executable for GNOME help browser

       /usr/bin/gst-md5sum     Wrapper script that runs the latest installed version of gst-md5sum-X.X

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-media		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gst-complete(1), gst-compprep(1), gst-feedback(1), gst-inspect(1),  gst-launch(1),  gst-launch-ext(1),  gst-register(1),  gst-thumbnail(1),
       gst-typefind(1), gst-xmlinspect(1), gst-xmllaunch(1), gstreamer-properties(1), libgstreamer-0.8(3), libgstgetbits(3), gst-std-options(5)

NOTES

       Original man page written by the GStreamer team at http://gstreamer.net/.

       Updated by Brian Cameron, Sun Microsystems Inc., 2004.

SunOS 5.10							    14 Oct 2004 						 gst-md5sum-0.8(1)
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