Explainshell is an online tool that helps users understand the command line syntax of Unix-based operating systems like Linux, Mac OS and BSD. It provides users with an easy-to-understand explanation of each command, helping them to better understand and use the command line interface. The app also provides a library of common commands to help users find the correct syntax for a given task. Additionally, users can search for specific command line arguments to find out what they do and how to use them. Explainshell is a great resource for beginners and experts alike, as it can help users quickly understand the purpose and syntax of a given command.
One is a web-based tool for learning about shell commands, the other is a terminal emulator.