find, grep, sed, and awk
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https://wilsonericn.wordpress.com/2011/08/25/find-grep-sed-and-awk/
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https://wilsonericn.wordpress.com/2011/08/25/find-grep-sed-and-awk/
Code and comments
Someone used the wrong tool for the job. If an awk script gets more than a few dozen lines, it's time to use another language/tool to process that data.