Contents
Roadmap info from roadmap website
Command Help
Command help in Linux is an essential feature that enables users to navigate through Linux shell commands with ease. This feature displays brief information on how to use these commands. For instance, typing man before any command brings up the manual entry for that command which explains what the command does, its syntax and the available options. Another popular command is help which is more suited for shell built-in functions, giving a brief description about each. These command line services are extremely beneficial for beginners trying to learn how to use the Linux shell, as well as seasoned users who may need to look up the specifics of seldom used commands.
To view the manual entry for any command, use:
man [command]For built-in shell functions, use:
help [command]Remember, Linux is case sensitive so be sure to type commands precisely.