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   groff    ( 1 )

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Окружение (Environment)

Normally, the path separator in the following environment variables is the colon; this may vary depending on the operating system. For example, DOS and Windows use a semicolon instead.

GROFF_BIN_PATH This search path, followed by PATH, is used for commands that are executed by groff. If it is not set then the directory where the groff binaries were installed is prepended to PATH.

GROFF_COMMAND_PREFIX When there is a need to run different roff implementations at the same time groff provides the facility to prepend a prefix to most of its programs that could provoke name clashings at run time (default is to have none). Historically, this prefix was the character g, but it can be anything. For example, gtroff stood for groff's troff, gtbl for the groff version of tbl. By setting GROFF_COMMAND_PREFIX to different values, the different roff installations can be addressed. More exactly, if it is set to prefix xxx then groff as a wrapper program internally calls xxxtroff instead of troff. This also applies to the preprocessors eqn, grn, pic, refer, tbl, soelim, and to the utilities indxbib and lookbib. This feature does not apply to any programs different from the ones above (most notably groff itself) since they are unique to the groff package.

GROFF_ENCODING The value of this environment value is passed to the preconv preprocessor to select the encoding of input files. Setting this option implies groff's command-line option -k (this is, groff actually always calls preconv). If set without a value, groff calls preconv without arguments. An explicit -K command-line option overrides the value of GROFF_ENCODING. See preconv(1) for details.

GROFF_FONT_PATH A list of directories in which to seek the selected output device's directory of device and font description files. See troff(1) and groff_font(5).

GROFF_TMAC_PATH A list of directories in which to seek macro files. See troff(1) and groff_tmac(5).

GROFF_TMPDIR The directory in which temporary files are created. If not set, but the environment variable TMPDIR is set, temporary files are created there instead. On MS-DOS and Windows platforms, if neither of the foregoing are set, the environment variables TMP and TEMP (in that order) are checked also. Otherwise, temporary files are created in /tmp. The refer(1), grohtml(1), and grops(1) commands use temporary files.

GROFF_TYPESETTER Set the default output device. If empty or not set, 'ps' is used. The -T option overrides GROFF_TYPESETTER.

SOURCE_DATE_EPOCH A timestamp (expressed as seconds since the Unix epoch) to use as the creation timestamp in place of the current time. The time is converted to human-readable form using ctime(3) when the formatter starts up and stored in registers usable by documents and macro packages.

TZ The time zone to use when converting the current time (or value of SOURCE_DATE_EPOCH) to human-readable form; see tzset(3).