Characters used for input or output in
UNIX shells having special meaning. For the shell,
these include wildcards, quotes, and logical operators.
See Also:
Shell.
Currie, M. Glossary. [Online, January 9, 1998.] University of Leeds Computer
Based Learning Website. http://www.starlink.rl.ac.uk/star/docs/sc4.htx/node75
.html.