nroff(1) General Commands Manual nroff(1)
nroff - format documents with groff for TTY (terminal) devices
nroff [-bcCEhikpStUVz] [-dcs] [-Karg] [-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 terminal output driver, which needs to know the character encoding scheme used by the device. 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 -b, -C, -d, -E, -i, -k, -K, -m, -M, -n, -o, -P, -r, -w, -W, and -Z options have the effects described in troff(1). -c and -h are equivalent to “-P-c” and “-P-h”, respectively. In addition, this implementation ignores the AT&T 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 stream, 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 contents matching 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/1.23.0/ 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 2021-06-20. (At that time, the date of the most recent commit that was found in the repository was 2021-06-17.) 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 email@example.com groff 1.23.0.rc1.654-4e1db-dirt1y8 June 2021 nroff(1)
Pages that refer to this page: col(1), colcrt(1), gdiffmk(1), man(1), ul(1), zsoelim(1), roff(7)