NROFF(1) General Commands Manual NROFF(1)
nroff - use groff to format documents for TTY devices
nroff [-CchipStUv] [-dcs] [-Mdir] [-mname] [-nnum] [-olist] [-rcn]
[-Tname] [-Wwarning] [-wwarning] [file ...]
nroff formats documents written in the roff(7) language for typewriter-
like devices such as terminal emulators.
GNU nroff emulates the traditional Unix 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. Con-
sequently, 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 "ENVIRONMENT", below. If all of the forego-
ing fail, -Tascii is implied.
Whitespace is not permitted between an option and its argument. The -h
and -c options are equivalent to grotty's options -h (using tabs in the
output) and -c (using the old output scheme instead of SGR escape se-
quences). The -d, -C, -i, -M, -m, -n, -o, -r, -w, and -W options have
the effect described in troff(1). In addition, nroff ignores -e, -q,
and -s (which are not implemented in troff). The options -p (pic), -t
(tbl), -S (safer), and -U (unsafe) are passed to groff. -v and --ver-
sion show version information, while --help displays a usage message;
all exit afterward.
specifies the default output device for groff.
is a colon-separated list of directories in which to search for
the groff executable before searching in PATH. If unset, /usr/
bin is used.
are pattern-matched in this order for standard character encod-
ings supported by groff in the event no -T option is given and
GROFF_TYPESETTER is unset.
Character definitions in the file /usr/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)
groff 1.22.4 4 January 2019 NROFF(1)