Each user is given a directory that catalogs that user's files on the disks. A directory is a file that lists other file names. Files can also be cataloged in subdirectories. Display the current directory. Change the current directory.
File names can be of any length chosen from any letter, numbers or other characters.
If you create a file with the same name as a file that already exists, the system obediently destroys your old file and replaces it with the new one. Copy one file to another. Displays the current system date and time. Gets additional information about a user. Displays current processes.