nroff(1) — Linux manual page

Name | Synopsis | Description | Environment | Notes | See also | COLOPHON

nroff(1)                 General Commands Manual                nroff(1)

Name         top

       nroff - format documents with groff for TTY (terminal) devices

Synopsis         top

       nroff [-bcCEhikpStUVz] [-dcs] [-Karg] [-mname] [-Mdir] [-nnum]
             [-olist] [-Ppost-proc-option] [-rcn] [-Tname] [-wwarning]
             [-Wwarning] [file ...]

       nroff --help

       nroff -v
       nroff --version

Description         top

       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.

Environment         top

       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.

Notes         top

       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.

See also         top

       groff(1), troff(1), grotty(1), locale(1), roff(7)

COLOPHON         top

       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
       man-pages@man7.org

groff 1.23.0.rc1.654-4e1db-dirt1y8 June 2021                      nroff(1)

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