simple optimal text formatter
Reformat a file
Reformat a file producing output lines of (at most) n characters
Reformat a file without joining lines shorter than the given width together
Reformat a file with uniform spacing (1 space between words and 2 spaces between paragraphs)
fmt [-WIDTH] [OPTION]... [FILE]...
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)
display this help and exit
output version information and exit
GNU coreutils online help:
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Copyright © 2022 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Full documentation <https://www.gnu.org/software/coreutils/fmt> or available locally via: info '(coreutils) fmt invocation'
Written by Ross Paterson.