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Update README.md

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onceupon 2018-01-03 12:21:42 +08:00 committed by GitHub
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@ -368,12 +368,12 @@ sed 's=/=\\/=g'
sed 's/A-.*-e//g' filename sed 's/A-.*-e//g' filename
``` ```
##### Remove last character of file ##### Remove last character of file
```bash`` ```bash
sed '$ s/.$//' sed '$ s/.$//'
``` ```
##### Insert character at specified position of file (e.g. AAAAAA --> AAA#AAA) ##### Insert character at specified position of file (e.g. AAAAAA --> AAA#AAA)
```bash`` ```bash
sed -r -e 's/^.{3}/&#/' file sed -r -e 's/^.{3}/&#/' file
``` ```