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An array
of strings called the is made available by when a process begins. By
convention these strings have the form The following names are used by
various commands: The size of the block units used by several commands,
most notably and BLOCKSIZE may be specified in units of a byte by specifying
a number, in units of a kilobyte by specifying a number followed by ‘‘K’’
or ‘‘k’’, in units of a megabyte by specifying a number followed by ‘‘M’’ or ‘‘m’’
and in units of a gigabyte by specifying a number followed by ‘‘G’’ or ‘‘g’’. Sizes
less than 512 bytes or greater than a gigabyte are ignored. A startup list
of commands read by and A user’s login directory, set by from the password
file The sequence of directories, separated by colons, searched by
etc, when looking for an executable file. PATH is set to ‘‘/usr/bin:/bin’’
initially by The name of the default printer to be used by and The
full pathname of the user’s login shell. The kind of terminal for which
output is to be prepared. This information is used by commands, such as
or which may exploit special terminal capabilities. See for a list
of terminal types. The string describing the terminal in TERM, or, if it
begins with a ’/’, the name of the termcap file. See below, and A sequence
of pathnames of termcap files, separated by colons or spaces, which are
searched for terminal descriptions in the order listed. Having no is equivalent
to a of is ignored if contains a full pathname. The directory in which
to store temporary files. Most applications use either or Setting this
variable will make them use another directory. The timezone to use when
displaying dates. The normal format is a pathname relative to For example,
the command displays the current time in California. See for more information.
The login name of the user. Further names may be placed in the environment
by the command and arguments in or by the command if you use It is
unwise to change certain variables that are frequently exported by files,
such as and unless you know what you are doing.
The
manual page appeared in
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