What is the command to delete empty lines in a file using sed?

Question

- What is the `sed` command to delete empty lines in a file. - What is the command (`sed` command?) to delete empty files in a folder?

Accepted Answer

You have to 'd' which is used to delete.

```
Ex:

sed -i '/^$/d' test
```

-i - is used to affect the file.

^ - is a beginning of line

$ - is a end of line

d - delete if there is a empty line

I hope this will help you.

Solution