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add awk

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remove last column
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onceupon 2018-02-09 10:36:52 +08:00 • committed by GitHub
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@ -456,6 +456,11 @@ awk 'BEGIN{OFS="\t"}$3="chr"$3'
awk '!/bbo/' file
```
##### Remove last column
```bash
awk 'NF{NF-=1};1' file
```
##### Usage and meaning of NR and FNR
e.g.
fileA: