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onceupon 2017-10-26 12:01:20 +08:00 committed by GitHub
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@ -1444,9 +1444,12 @@ cat file.fastq | paste - - - - | sed 's/^@/>/g'| cut -f1-2 | tr '\t' '\n' >file.
cat file|rev | cut -d/ -f1 | rev
```
##### Add one to variable/increment a numeric variable (e.g. $var)
##### Add one to variable/increment/ i++ a numeric variable (e.g. $var)
```bash
((var++))
or
var=$((var+1))
```
##### Some handy environment variables