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    <p>Following a <a href="http://chat.stackoverflow.com/transcript/10934/16-19">discussion in chat</a>, one solution using PHP as a command line script would look like this - </p> <pre><code>#! /usr/bin/php &lt;?php $options = getopt("f:r:"); $inputFile = $options['f']; $replacement = $options['r']; // read entire contents of input file $inputFileContents = file_get_contents($inputFile); // setup the regex and execute the search $pattern = '/.*link.*href=["|\']?(.*[\\\|\/]?.*)\.css["|\']?.*/'; preg_match_all($pattern, $inputFileContents, $matches); // remove last occurance of regex // these are the lines we'll want to hang onto $matchedLines = $matches[0]; array_pop($matchedLines); // isolate the last css file name $matchedFileName = array_pop($matches[1]); // first substitution replaces all lines with &lt;link&gt; with // an empty string (deletes them) $inputFileContents = str_replace($matchedLines,'',$inputFileContents); // second substitution replaces the matched file name // with the desired string $inputFileContents = str_replace($matchedFileName,$replacement,$inputFileContents); //*/ // save to new file for debugging $outputFileName = "output.html"; $outputFile = fopen($outputFileName,'w+'); fwrite($outputFile,$inputFileContents); fclose($outputFile); /*/ // save changes to original file $origFile = fopen($inputFile,'w+'); fwrite($origFile,$inputFileContents); fclose($origFile); //*/ exit(); ?&gt; </code></pre> <p>You would execute this script from the command line like so - </p> <pre><code>$ php thisScript.php -f "input.html" -r "hello-world" </code></pre> <ul> <li><code>-f</code> is the input file that we are parsing. </li> <li><code>-r</code> is the replacement string for the css file name (in this example "hello-world").</li> </ul>
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    1. POI'm trying to write a shell script to replace a few lines of text in a file with a new value
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    1. COIf you don't want to read through all of it, Lix went out of his way to explain quite a bit to me and his solution results in the exact functionality of what the script needed to do. Now the fun part, porting it from PHP to perhaps a grep/sed or grep/sed/awk version.
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    2. COLix ! where is my `fclose` ?! :-) missing `fclose($outputFile);` after `fwrite...` line.
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