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Name | Synopsis | Description | Environment | Notes | See Also | COLOPHON |
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nroff(1) General Commands Manual nroff(1)
nroff - use groff to format documents for TTY (terminal) devices
nroff [-cChipStUV] [-dcs] [-mname] [-Mdir] [-nnum] [-olist] [-Ppost-
proc-option] [-rcn] [-Tname] [-wwarning] [-Wwarning] [file ...]
nroff --help
nroff -v
nroff --version
nroff formats documents written in the roff(7) language for
typewriter-like devices such as terminal emulators.
GNU nroff emulates the AT&T nroff command using groff(1). nroff
generates output via grotty(1), groff's TTY output device, which
needs to know the character encoding scheme used by the terminal.
Consequently, acceptable arguments to the -T option are ascii,
latin1, utf8, and cp1047; any others are ignored. If neither the
GROFF_TYPESETTER environment variable nor the -T command-line option
(which overrides the environment variable) specifies a (valid)
device, nroff consults the locale to select an appropriate output
device. It first tries the locale(1) program, then checks several
locale-related environment variables; see section “Environment”,
below. If all of the foregoing fail, -Tascii is implied.
Whitespace is not permitted between an option and its argument. The
-C, -d, -i, -m, -M, -n, -o, -P, -r, -w, and -W options have the
effect described in troff(1). -c and -h are equivalent to “-P-c” and
“-P-h”, respectively. In addition, this implementation ignores the
traditional Unix nroff options -e, -q, and -s (which are not
implemented in groff). The options -p (pic), -t (tbl), -S (safer),
and -U (unsafe) are passed to groff. -V causes nroff to display the
constructed groff command on the standard output, but does not
execute it. -v and --version show version information, while --help
displays a usage message; all exit afterward.
GROFF_BIN_PATH
is a colon-separated list of directories in which to search
for the groff executable before searching in PATH. If unset,
/usr/local/bin is used.
GROFF_TYPESETTER
specifies the default output device for groff.
LC_ALL
LC_CTYPE
LANG
LESSCHARSET
are pattern-matched in this order for standard character
encodings supported by groff in the event no -T option is
given and GROFF_TYPESETTER is unset.
Pager programs like more(1) and less(1) may require command-line
options to correctly handle some output sequences; see grotty(1).
Character definitions in the file /usr/local/share/groff/1.22.4/tmac/
tty-char.tmac are loaded to replace unrepresentable glyphs.
groff(1), troff(1), grotty(1), locale(1), roff(7)
This page is part of the groff (GNU troff) project. Information
about the project can be found at
⟨http://www.gnu.org/software/groff/⟩. If you have a bug report for
this manual page, see ⟨http://www.gnu.org/software/groff/⟩. This
page was obtained from the project's upstream Git repository
⟨https://git.savannah.gnu.org/git/groff.git⟩ on 2020-09-18. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-09-19.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
groff 1.22.4.234-3ba6 18 September 2020 nroff(1)
Pages that refer to this page: col(1), colcrt(1), gdiffmk(1), groff(1), man(1), ul(1), write(1), zsoelim(1), roff(7)
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