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POBash echo outputting text in middle of concatenated string
 

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  1. POBash echo outputting text in middle of concatenated string
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    <p>Preamble: So I have a project whereby I need to run a conversion tool on a bunch of files. There are multiple steps to the conversion, and it can take a while. Since these files aren't necessarily in the same directory, I created a text file with the filenames to convert:</p> <pre><code>&lt;filenames.txt&gt; /home/me/Documents/file1.txt /home/me/Documents/file2.txt /home/me/Documents/file3.txt </code></pre> <p>Problem: I then have a bash script to run over these files, and do the conversion steps. However, I try and echo the phase and filename, and echo, in this case, sticks the echo'd text in the middle of the filename:</p> <pre><code>&lt;script.sh&gt; cat filenames.txt | while read some_file do echo echo "Begin FORMAT_A to FORMAT_B conversion..." echo "FORMAT_A Filename:" echo $some_file formatb_dir= dirname $some_file | tr '\n' "/" formatb_file= basename $some_file ".xml" | tr '\n' "_" formatb=$formatb_dir$formatb_file"form_b.xml\n" echo "FORMAT_B Filename:" echo $formatb done </code></pre> <p>Produces output like this:</p> <pre><code>Begin FORMAT_A to FORMAT_B conversion... FORMAT_A Filename: /home/me/Documents/file1.txt /home/me/Documents/file1.txt_FORMAT_B Filename: form_b.xml Begin FORMAT_A to FORMAT_B conversion... FORMAT_A Filename: /home/me/Documents/file2.txt /home/me/Documents/file2.txt_FORMAT_B Filename: form_b.xml Begin FORMAT_A to FORMAT_B conversion... FORMAT_A Filename: /home/me/Documents/file3.txt /home/me/Documents/file3.txt_FORMAT_B Filename: form_b.xml </code></pre> <p>"FORMAT_B Filename", the echo'd text, has appeared before the appended text "form_b.xml".</p> <p>I looked at the man pages for dirname, basename, echo and tr, but I didn't spot anything that looks like it'd cause what I'm seeing. I tried looking around on Google, but I'm not sure I'm asking the right questions ("bash echo text before variable"?). </p> <p>Question: <strong>Why is my echo putting the echo'd text in the middle of my variable?</strong></p> <p>(possible related question: "Am I going about what I'm doing in completely the wrong way?")</p> <p><strong>Edit:</strong> I accepted fortea's answer because it walked me through what I didn't understand about variables and getting the output from commands. That said, dogbane and Jonathan Leffler showed better ways of doing what I was doing.</p>
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