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This chapter is from the book

Metacharacter Summary

Table 3.12 lists the metacharacters that appeared in this chapter, and their purpose.

Metacharacters Used in GNU and Unix Commands



' '

Cancel the special meaning of anything but the backquote

" "

Cancel the special meaning of most characters


Treat the next string as a variable


Allow a command to be treated as a variable


Any number of characters


Separate dissimilar commands


Any single character

[ ]

Any of the enclosed characters


Treat the next character literally

´ ´

Execute the enclosed command


Allow one command's output to be the next command's input


Input redirection




Output redirection


Output append

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