Add new line character at the end of file in bash

问题

How can I use bash command line to add new line character at the end of file named file.txt. I tried use echo but it's not right. Can you show me how can I do it?

回答1:

echo "" >> file.txt

Adds a newline character at the end

回答2:

With sed:

sed -i '' -e '$a\' file.txt

with echo:

echo  >> file.txt

回答3:

Use Vi which automatically creates EOL at EOF on file save.

For example:

vi -escwq foo.txt

or:

ex -scwq foo.txt

To correct multiple files, check: How to fix 'No newline at end of file' for lots of files? at SO

回答4:

This works on centos the empty string above didn't.

sed -i -e '$a\' file

回答5:

GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin14)

echo \ >> file.txt

来源：https://stackoverflow.com/questions/23055831/add-new-line-character-at-the-end-of-file-in-bash