B.2 Special Symbols

|	Set up a pipe.
>	Redirect output to a file.
<	Redirect input from a file.
>>	Append output to an existing file.
/	Separator used in pathnames.
.	Current directory.
..	Parent directory.
&	Process command in the background.
*	Match any number of characters in filename.
?	Match any single character in filename.
[]	Match any one of the enclosed characters in filename.
;	Command separator.
()	Group commands.