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add sed

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remove lines
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onceupon 2017-10-02 10:38:44 +08:00 committed by GitHub
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README.md
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@ -142,6 +142,16 @@ http://www.cyberciti.biz/faq/grep-regular-expressions/
## Sed
[[back to top](#handy-bash-oneliner-commands-for-tsv-file-editing)]
##### Remove the 1st line
```bash
sed 1d filename
```
##### Remove the 100 lines (remove line 1-100)
```bash
sed 1,100d filename
```
##### Remove lines with word (e.g. bbo)
```bash
@ -163,7 +173,7 @@ sed "1i >$i"
//'1i' means insert to first line
##### Delete empty lines
##### Delete/remove empty lines
```bash
sed '/^\s*$/d'
@ -173,13 +183,13 @@ or
```bash
sed 's/^$/d'
```
##### Delete last line
##### Delete/remove last line
```bash
sed '$d'
```
##### Delete last character from end of file
##### Delete/remove last character from end of file
```bash
sed -i '$ s/.$//' filename
```