You know you're in for a wild ride when you pipe "gzip -cd file | wc -l" and it takes over an hour to tell you how much data there is.
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You can "cheat" and get an estimate with `head -n 10000 data.file > sample.file; ll -h sample.file`. should tell you size on disk for 10k lines, then divide the size of the data by the sample to estimate lines.
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That's really awesome -- so you're basically finding the average line length and then using that to guestimate the total lines. Thanks!
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