1 If your wooden pallets contain low-grade engineered wood or cardboard, they may also contain formaldehyde and harbor all kinds of critters you don't want to know about.
Command shell overview. The command shell is a separate software program that provides direct communication between the user and the operating system. The non-graphical command shell user interface provides the environment in which you run character-based applications and utilities.
The default prompt on the bash shell, which is the default shell on Linux, contains the name of the user, the name of the computer and the name of the current directory (i.e., the directory in which the user is currently working). command is an instruction to tell a computer to do something, e.g., to execute a program. The functions of a command prompt are (1) to inform the user that the system is ready for the next command, data element or other input and (2) to help the user plan and execute subsequent operations.