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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.
a text pattern consisting of a combination of alphanumeric characters and special characters known as metacharacters.
the name of a directory or file given in relation to your current working directory.
See UNIX File System for a more detailed explanation.
any host on the network which you are not presently using.
the directory located at the top of the Unix file system. It is represented by the "/" (forward slash) character.