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POHow do I crop a very large text file between first and last occurrence of a string? (Linux)
 

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  1. POHow do I crop a very large text file between first and last occurrence of a string? (Linux)
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    <p>On a Linux system, I have a very large text file and I need to create a new text file which contains every line between the first and last of occurrence of a particular sessionId (those lines included).</p> <p>I guess I probably need to use sed or something?</p> <p>As a bonus, sometimes I won't know which log file will contain the session trace. So a script that can work with regular expressions would be ideal. In this case I would expect the script to find the first file with the sessionId in it and then crop that file before exiting.</p> <p>Example Log file looking for sessionId 1111-ABCD-1111-SOME-GUID :</p> <pre><code>line one containing other session id: 2222-ABCD-1111-SOME-GUID blaa blaa blaa line two blaa blaa blaa line three containing my session id: 1111-ABCD-1111-SOME-GUID blaa blaa blaa line four containing other session id: 2222-ABCD-1111-SOME-GUID line five blaa blaa blaa line six containing other session id: 3333-ABCD-1111-SOME-GUID blaa blaa blaa line seven containing other session id: 2222-ABCD-1111-SOME-GUID line eight containing my session id: 1111-ABCD-1111-SOME-GUID blaa blaa blaa line nine containing other session id: 3333-ABCD-1111-SOME-GUID line ten containing my session id: 1111-ABCD-1111-SOME-GUID line eleven line twelve containing other session id: 3333-ABCD-1111-SOME-GUID blaa blaa blaa line thirteen containing my session id: 1111-ABCD-1111-SOME-GUID line fouteen blaa blaa blaa line fifteen containing other session id: 3333-ABCD-1111-SOME-GUID blaa blaa blaa </code></pre> <p>output file would contain lines three to thirteen inclusive.</p>
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    1. COyou should show sample input text and also your output whenever possible. This is help us to help you easier
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    2. COI have completely redone my answer and it now works to your specification, including the 'bonus'. Please see http://stackoverflow.com/questions/1913633/how-do-i-crop-a-very-large-text-file-between-first-and-last-occurrence-of-a-strin/1913756#1913756
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      1. USSiegeX
 

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