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add variable

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get the length of variable
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onceupon 2018-04-10 14:57:51 +08:00 committed by GitHub
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@ -826,6 +826,13 @@ for line in $(cat myfile); do echo $line; read -n1; done
#'bar'
# double/single quotes around single quotes make the inner single quotes expand variables
```
##### get the length of variable
```bash
var="some string"
echo ${#var}
# 11
```
##### replacement (e.g. replace 'a' with ',')
```bash
{i/a/,}