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Full Discussion: Compare two md5sum
Top Forums Shell Programming and Scripting Compare two md5sum Post 302981049 by toscan on Tuesday 6th of September 2016 10:47:03 PM
Old 09-06-2016
Hello Don Cragun !

Thanks to show me the right way to insert code in my post and thanks for the reply,

Now with your help I don't have errors in the script but the result is wrong.

I check the two checksums are the same and the sh script give it changes.

I cannot give the url now because I need 5 posts but i can send you a capture.

Image

---------- Post updated at 11:30 AM ---------- Previous update was at 11:24 AM ----------

OK I found my error

---------- Post updated at 11:31 AM ---------- Previous update was at 11:30 AM ----------

there is a " -"
after the second checksum the just verified now one.

---------- Post updated at 11:33 AM ---------- Previous update was at 11:31 AM ----------

I added th space and the "-" but I now have an error

Code:
~# sh verif2.sh 
verif2.sh: 3: verif2.sh: -: not found

I'm trying different with quotes etc.

---------- Post updated at 11:37 AM ---------- Previous update was at 11:33 AM ----------

Hello again, now i don't understand because it still give the "change" result and I checked with an echo to see the two different results and they are the same !

Code:
 if [ "$last_checksum" = "$checksum" ]
then
    echo "rien"
else
    echo "change"
fi

echo $last_checksum
echo  $checksum

it gives :

Code:
sh verif2.sh 
change
52f8422918c5347166dbb40c76f95e9c -
52f8422918c5347166dbb40c76f95e9c -

we see it's the same it say "change" is there a reason for this ?

---------- Post updated at 11:47 AM ---------- Previous update was at 11:37 AM ----------

Sorry again, I find out !

with the quotes, the new checksum echo result is different thant without the quotes : one more space " -"
If i delete the quote at the first declaration of the checksum valeur its give an operator error, so i add one more space in my last checksum and it works ! !

Thank you so much for your super clear explanations !

I'm now trying to insert it in a cron and send me an email if it changes, the vps where I run this script already works for sending emails because my logwatch emails are finely received.

thank you again.

when I was a kid computers were my hobby and when I can afford it and when my usage of computers fit some of my needs I'm happy to do it myself. But I can confess actually I m jobless in japan and need money so this time I'm not defendable to spend so much time in this hobby...

I really apreciate your help !

Thank you.
 

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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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