A command-line interface (CLI), is a means of interacting with a computer program where the user issues commands to the program in the form of successive lines of text.
Remove files or directories.
Print name of current/working directory.
Mount a file system.
List file attributes on a Linux second extended file system.
Make links between files.
Check and repair a Linux file system.
Report file system disk space usage.
Estimate file space usage.
Change file owner and group.