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Fix #67: remove awk example duplicate

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Kwardakov, Michael 2017-01-18 14:03:59 +03:00
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@ -238,7 +238,7 @@ Notes:
- You can set a specific command's environment by prefixing its invocation with the environment variable settings, as in `TZ=Pacific/Fiji date`.
- Know basic `awk` and `sed` for simple data munging. For example, summing all numbers in the third column of a text file: `awk '{ x += $3 } END { print x }'`. This is probably 3X faster and 3X shorter than equivalent Python.
- Know basic `awk` and `sed` for simple data munging. See One-liners section for examples.
- To replace all occurrences of a string in place, in one or more files:
```sh