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add new one-liner to 'awk' section

- signed-off-by: trimstray <trimstray@gmail.com>
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trimstray 3 years ago
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@@ -3259,6 +3259,15 @@ awk '!x[$0]++' filename
awk '{print $NF}' filename
```

###### Remove empty lines

```bash
awk 'NF > 0' filename

# alternative:
awk NF filename
```

###### Print multiple columns with separators

```bash


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