The echo and date utilities are two of the most frequently used from the large collection of GNU/Linux utilities. The script utility helps you record part of a session in a file, and mcopy makes a copy of a text file that can be read on an MS Windows machine.
The echo utility copies anything you put on the command line after echo to the screen. Some examples are shown in Figure 3-8. The last example shows what the shell does with an unquoted asterisk (*) on the command line: expands it into a list of filenames in the directory.
$ ls memo memo.0714 practice $ echo Hi Hi $ echo This is a sentence. This is a sentence. $ echo star: ...