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add variable

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remove the first or last string from variable
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onceupon 2018-04-12 14:34:29 +08:00 committed by GitHub
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commit 2d890d0538
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@ -844,6 +844,13 @@ var="some string"
echo ${var%%"${var#?}"}
#s
```
##### remove the first or last string from variable
```bash
var="some string"
echo ${var:2}
#me string
```
##### replacement (e.g. remove the first leading 0 )
```bash
var="0050"