nroff - use groff to format documents for TTY devices
nroff formats documents written in the roff(7) language for
typewriter-like devices such as terminal emulators.
|[-CchipStUv] [-dcs] [-Mdir]
[-mname] [-nnum] [-olist]
[-rcn] [-Tname] [-Wwarning]
[-wwarning] [file ...]
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. 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 “ENVIRONMENT”,
below. If all of the foregoing 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 sequences). 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 --version show version information, while --help
displays a usage message; all exit afterward.
Character definitions in the file
/usr/share/groff/1.22.4/tmac/tty-char.tmac are loaded to replace
- 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 encodings
supported by groff in the event no -T option is given and
GROFF_TYPESETTER is unset.