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add sed

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insert character at specified position of file
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onceupon
2017-02-13 16:15:38 +08:00
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@ -308,7 +308,10 @@ sed 's/A-.*-e//g' filename
sed '$ s/.$//'
```
#####insert character at specified position of file (e.g. AAAAAA --> AAA#AAA)
```bash``
sed -r -e 's/^.{3}/&#/' file
```
#Awk
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