path: n. 1. A bang path or explicitly routed Internet
address; a node-by-node specification of a link between two
machines. Though these are now obsolete as a form of addressing,
they still show up in diagnostics and trace headers ocvcasionally
(e.g. in NNTP headers). 2. [Unix] A filename, fully specified
relative to the root directory (as opposed to relative to the
current directory; the latter is sometimes called a `relative
path'). This is also called a `pathname'. 3. [Unix and MS-DOS] The
`search path', an environment variable specifying the directories in
which the shell (COMMAND.COM, under MS-DOS) should look for
commands. Other, similar constructs abound under Unix (for example,
the C preprocessor has a `search path' it uses in looking for
`#include' files).