Direct mail is a broad term that includes the following types of mailed promotions: Institutional direct mail serves to promote the name of the publishing house with no reasonable expectation of sales revenues.
touch (Unix) touch is a standard Unix command-line interface program which is used to update the access date and / or modification date of a file or directory. In its default usage, it is the equivalent of creating or opening a file and saving it without any change to the file contents.
Today, we use a keyboard and a mouse to give commands to the computer. DOS stands for Disk Operating System. Today, the term is used most often to describe the Microsoft Command Line Interface (CLI) common to many IBM compatibles. Command Line Interfaces provide the keyboard as the primary means for the user to interact with the operating system. The COMMAND.COM program is DOS's CLI.