Title: free and echo Commands
Course: CIS 121: Linux/UNIX I: Fundamentals ~ For IGNITE Review > Section: Learning Modules

free

The free command reports back how much free space you have on the system.

echo

The echo command is very simple: it echoes the input that it receives. (Paul Cobbault, p. 74)

This command is useful when doing scripting where you may require prompts to your user for inputs or want to display comments about what is happening.