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    +1, but perhaps better written as echo $MYSTRING | fold -w 30, since the -30 syntax doesn't appear in the fold manpage? Commented Jan 3, 2013 at 23:14
  • 5
    For posterity, there is also fmt. The difference between fold and fmt is that fold will wrap at the fixed width, even splitting words and may begin lines with blanks. While fmt will wrap near or under the width, it will not split words, lines will not begin with blanks and short lines may be joined. Commented Jan 3, 2013 at 23:15
  • 5
    fold appears to have similar behavior to fmt when the -s option is used. Commented Jan 3, 2013 at 23:16
  • funny, i used -w option but it split it by char. Commented Jan 4, 2013 at 2:26