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UNIX in a Nutshell: System V Edition

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UNIX Commands
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fmt [options] [files]

Fill and join text, producing lines of roughly the same length. (Unlike nroff, the lines are not justified.) fmt ignores blank lines and lines beginning with a dot (.) or with "From:". The emacs editor uses ESC-q to join paragraphs, so fmt is useful for other editors, such as vi. The following vi command fills and joins the remainder of the current paragraph:




Don't adjust the first two lines; align subsequent lines with the second line. Useful for paragraphs that begin with a hanging tag.


Split long lines but leave short lines alone. Useful for preserving partial lines of code.

-w n

Create lines no longer than n columns wide. Default is 72. (Can also be invoked as -n for compatibility with BSD.)


Create lines no longer than width; default is 72 columns.

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