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

Sometimes you may be required to write or append multiple lines to a file. You can use multiple methods to write multiple lines to a file through command line in Linux system. Here are three methods described below.

Method 1:-

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

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

Method 2:-

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

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

Method 3:-

This is the third and suggested option to use here documents (<<) to write a block of multiple lines text in a single command. The above methods are also useful but personally, I also use this while working.

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