fmt(1)

fmt1

Simple optimal text formatter

Usage

fmt [-WIDTH] [OPTION] ... [FILE] ...

Overview

Reformat each paragraph in the FILE(s), writing to standard output. The option -WIDTH is an abbreviated form of --width=DIGITS.

With no FILE, or when FILE is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.

-c, --crown-margin

preserve indentation of first two lines

-p, --prefix=STRING

reformat only lines beginning with STRING, reattaching the prefix to reformatted lines

-s, --split-only

split long lines, but do not refill

-t, --tagged-paragraph

indentation of first line different from second

-u, --uniform-spacing

one space between words, two after sentences

-w, --width=WIDTH

maximum line width (default of 75 columns)

-g, --goal=WIDTH

goal width (default of 93% of width)

--help

display this help and exit

--version

output version information and exit

Releases

19 releases since Debian 1.1 (Buzz); the text changed 15 times.

  1. 1.1
  2. 1.2–2.1
  3. 2.2
  4. 3.0
  5. 3.1
  6. 4.0
  7. 5.0
  8. 6.0
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. Arch

--goal since Debian 8 (Jessie); -g since Debian 8 (Jessie).

-width until Debian 2.1 (Slink).

Author

Written by Ross Paterson.

Reporting bugs

Report bugs to: <[email protected]>.
Report any translation bugs to: <https://translationproject.org/team/>.
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>

From coreutils 9.12-2 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.