Add line in linux file

- Add new line in linux file
- Add line numbers in linux file
- Add line in text file linux
- Add line to file linux command
- Add line to file linux bash
- Add line beginning file linux
- Add line into file linux
- Add line to file linux terminal
- Add string to each line in file linux
- How to add first line in linux file
- Linux add line in middle of file
- Add string to end of each line in file linux
- Add one line to file in linux
- Linux add line after match in file