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the result of a program or command running a new version of itself. If done carelessly this can cause a never-ending loop. However as a programming technique it is often used to simplify such tasks as searching down through a directory tree.

regular expression

a text pattern consisting of a combination of alphanumeric characters and special characters known as metacharacters.

relative pathname

the name of a directory or file given in relation to your current working directory.

See UNIX File System for a more detailed explanation.

remote host

any host on the network which you are not presently using.

root directory

the directory located at the top of the Unix file system. It is represented by the "/" (forward slash) character.

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