nroff — emulate nroff command with groff


nroff [-CchipStUvwW] [-dcs] [-Mdir] [-mname] [-nnum] [-olist] [-rcn] [-Tname] [file ...]
nroff --help
nroff -v | --version


The nroff script emulates the nroff command using groff. Only ascii, latin1, utf8, and cp1047 are devices accepted by nroff to select the output encoding emitted by grotty, groff's TTY output device. If neither the GROFF_TYPESETTER environment variable nor the -T command line option (which overrides the environment variable) specifies a (valid) device, nroff checks the current locale to select a default output device. It first tries the locale program, then the environment variables LC_ALL, LC_CTYPE, and LANG, and finally the LESSCHARSET environment variable.

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 silently ignores the options -e, -q, and -s (which are not implemented in troff). Options -p (pic), -t (tbl), -S (safer), and -U (unsafe) are passed to groff. -v and --version show the version number, --help prints a help message.



The default device for groff. If not set (which is the normal case), it defaults to ‘ps’.


A colon separated list of directories in which to search for the groff executable before searching in PATH. If unset, ‘/usr/bin’ is used.


This shell script is basically intended for use with man(1). nroff-style character definitions (in the file tty-char.tmac) are also loaded to emulate unrepresentable glyphs.

See Also

groff(1), troff(1), grotty(1)


Copyright © 1989-2014 Free Software Foundation, Inc.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be included in translations approved by the Free Software Foundation instead of in the original English.

Referenced By

col(1), colcrt(1), gdiffmk(1), groff(1), groff_mdoc(7), man(1), perlform(1), perlpod(1), pod2man(1), talk(1), ul(1), write(1).

The man page gnroff(1) is an alias of nroff(1).

4 November 2014 Groff Version 1.22.3