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Old 03-26-2017, 08:23 PM   #1
LXer
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LXer: grep vs AWK vs Ruby, and a uniq disappointment


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In my data-cleaning work I often make up tallies of selected individual characters from big, UTF-8-encoded data files. What's the best way to do this? As shown below, I've tried grep/sort/uniq, AWK and Ruby, and AWK's the fastest. The trials also revealed an unexpected problem with the uniq program in GNU coreutils.

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