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.
Microsoft DOS echo command. About echo. Echo is used to repeat the text typed in back to the screen and can be used to echo to a peripheral on the computer, such as a COM port. Availability. The echo command is an internal command that is available in the below Microsoft operating systems.