How to Write/Append Multiple Lines to a File on Linux

Sometimes you may required to write for append mutiple lines to a file. You can use multiple methods to write multiple lines to a file.

Option 1:-

You can write/append content line by line using echo command.

$ echo "line 1 content" >> myfile.txt
$ echo "line 2 content" >> myfile.txt

Option 2:-

You can append content in single multi line command with quoted text.

$ echo "line 1 content
line 2 content" >> myfile.txt

Option 3:-

This is third and suggested option to use here documents (<<) to write a block of multiple lines text in single command.

$ cat >> greetings.txt <<EOL
line 1 content
line 2 content
line 3 content
EOL