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POBash: Concatenating strings fails when read from certain files
 

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  1. POBash: Concatenating strings fails when read from certain files
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    <p>I have a web application that is deployed to a server. I am trying to create a script that amoing other things reads the current version of the web application from a properties file that is deployed along with the application.</p> <p>The file looks like this:</p> <pre><code>//other content version=[version number] build=[buildnumber] //other content </code></pre> <p>I want to create a variable that looks like this: <code>version-buildnumber</code></p> <p>Here is my script for it:</p> <pre><code>VERSION_FILE=myfile VERSION_LINE="$(grep "version=" $VERSION_FILE)" VERSION=${VERSION_LINE#$"version="} BUILDNUMBER_LINE=$(grep "build=" $VERSION_FILE) BUILDNUMBER=${BUILDNUMBER_LINE#$"build="} THEVERSION=${VERSION}-${BUILDNUMBER} </code></pre> <p>The strange thing is that this works in some cases but not in others. The problem I get is when I am trying to concatenate the strings (i.e. the last line above). In some cases it works perfectly, but in others characters from one string replace the characters from the other instead of being placed afterwards.</p> <p>It does <strong>not</strong> work in these cases:</p> <ul> <li>When I read from the deployed file</li> <li>If I copy the deployed file to another location and read from there</li> </ul> <p>It <strong>does</strong> work in these cases:</p> <ul> <li>If I write a file from scratch and read from that one.</li> <li>If I create my own file and then copy the content from the deployed file into my created file.</li> </ul> <p>I find this very strange. Is there someone out there recognizing this?</p> <p>/Ludwig</p>
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    1. USDennis Williamson
    1. USLudwig Magnusson
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    1. COCan you reproduce it?, Did you try debugging with `set -x`?
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      1. USKurzedMetal
    2. COIf there is one thing bash is not particularly good at its processing text. I think you will find it much easier to delegate this work to Python, perl, or awk.
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      1. USnsfyn55
    3. COLooks like you have some stray `$` in there -- `VERSION=${VERSION_LINE#version=}`
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      1. POBash: Concatenating strings fails when read from certain files
      1. USglenn jackman
 

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