What is the purpose of the 'echo' command in Linux?

The echo command in Linux is used to display text or the value of variables on the terminal. It is commonly used for:

• Displaying messages to users.
• Showing the values of variables.
• Creating simple text files.
• Debugging scripts by displaying variable values or script progress.

For example, you can use it like this:

echo "Hello, Linux World"

This command will output:

Hello, Linux World