Linux Commands Examples

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simple optimal text formatter


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

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vi fmt fmt_setu fmt_size fmt_marg fmt_head
go fmt ./...
go fmt garnish/...


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

Mandatory arguments to long options are mandatory for short options too.
, --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)


display this help and exit


output version information and exit

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


Copyright © 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

reporting bugs

Report fmt bugs to bug-coreutils[:at:]gnu[:dot:]org
GNU coreutils home page: <>
General help using GNU software: <>
Report fmt translation bugs to <>

see also

The full documentation for fmt is maintained as a Texinfo manual. If the info and fmt programs are properly installed at your site, the command

info coreutils 'fmt invocation'

should give you access to the complete manual.


Written by Ross Paterson.

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