fold -s -w 90 file.txt

wrap long lines of a text

wraps text lines at the specified width (90 here). -s option is to force to wrap on blank characters -b count bytes instead of columns

These Might Interest You

  • I used this fragment with Imagemagick convert so that I can place long text strings in pictures. The "\n" gets converted to a true newline in the image. So this fragment uses fold command to wrap the line and then sed to convert newlines (and any trailing spaces on the line) to the text "\n" Show Sample Output

    fold -sw 20 <(echo "Long Text to be wrapped with \"\n\"") |sed ':a;N;$!ba;s/ *\n/\\n/g'
    alecthegeek · 2015-04-16 21:06:53 3
  • With thanks to dew on Efnet's #regex, back in 2005. This version indents subsequent lines after the first by one space, to make paragraphs visibly obvious -- remove the \3 to prevent this behavior. Lines are only broken at spaces: long strings with no spaces will not wrap, so URLs are safe. Replace the "75"s to make the regex linewrap to other amounts. From the unix commandline, "fold" is likely your better choice, but this snippet is handy in editors which allow regular expressions, in scripting, and other such situations where "fold" is unavailable. Show Sample Output

    s/(?=.{75,})(?:(.{0,75})(?:\r\n?|\n\r?)|(.{0,75}))[ ]/\1\2\n /g
    DewiMorgan · 2012-02-28 02:27:20 0
  • With code, the only way to have spaces parsed correctly in any kind of portable way is to use ... but then long lines will not wrap. That's kinda important for low-res screens or smaller windows. Ideally, code blocks would be wrapped to the screen width, with line numbers and syntax hilighted, so that if someone does "view source", they'd see the unadulterated code for cutting and pasting. Then have all formatting done by CSS and javascript, such that: - if someone copies the text as displayed in any browser, they'll get properly formatted code in their clipboard, without wrapping - it fails gracefully so that it looks at least reasonable in all browsers, even those that don't know CSS/JS and can't do colours (eg lynx, screen readers) If anyone knows a way, that would make me happy. Until then, I am stuck with the above as the best I can do. For example, in LiveJournal, something like this: <div width="100%" style="(the code above)"><pre>Code goes here</pre> ... will look considerably better and more readable than the default <blockquote><pre></pre></blockquote>. It's not perfect, of course. If you have enough control to create your own css file, you should definitely do that instead.

    overflow:auto;padding:5px;border-style:double;font-weight:bold;color:#00ff00;background-color:0;"><pre style="white-space:pre-wrap;white-space:-moz-pre-wrap !important;white-space:-pre-wrap;white-space:-o-pre-wrap;word-wrap:break-word;_white-space:pre;
    DewiMorgan · 2012-02-28 04:14:11 0
  • Per default, linux/unix shells are configured with a width of 80 characters. If you like to edit a phrase or string on a line with more than 80 characters it might take long to go there (for example a line with 1000 characters and you like to edit the 98th word which is character 598-603). Maybe you might wish to use 78 characters, because if you forward the text via mail and the text will be quoted (2 extra characters at the beginning to the line "> "), you use 80 characters, otherwise 82, which are lame.

    fold -w 78 -s file-to-wrap
    GeckoDH · 2009-05-19 19:33:10 1
  • Personally I think line wrap in default df command is annoying for scripting & seeing. So I overwrite it. Maybe more work should be done if wrapped line is over 2... Show Sample Output

    alias df="df | awk 'NF == 1 {printf(\$1); next}; {print}'"
    MeaCulpa · 2011-04-09 06:43:51 2
  • Prints line numbers making it easier to see long lines that wrap in your terminal and extra line breaks at the end of a file. :set nu works too. Show Sample Output

    :set number
    sonic · 2013-10-07 15:03:52 0

What Others Think

Didn't know about this command. Nice one.
Resolution · 470 weeks and 5 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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