Fold (Unix)

The utility first appeared in 1BSD of 1977 and was originally written by Bill Joy. is part of the X/Open Portability Guide since issue 4 of 1992. It was inherited into the first version of POSIX.1 and the Single Unix Specification. The version of fold bundled in GNU coreutils was written by David MacKenzie. The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities. ==Example==

As a usage example, to fold a file named file.txt to have a maximum of 50 characters per line, one could run the following command: $ cat file.txt Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Curabitur dignissim venenatis pede. Quisque dui dui, ultricies ut, facilisis non, pulvinar non, purus. Duis quis arcu a purus volutpat iaculis. Morbi id dui in diam ornare dictum. Praesent consectetuer vehicula ipsum. Praesent tortor massa, congue et, ornare in, posuere eget, pede. Vivamus rhoncus. Quisque lacus. In hac habitasse platea dictumst. Nullam mauris tellus, sollicitudin non, semper eget, sodales non, pede. Phasellus varius ullamcorper libero. Fusce ipsum lorem, iaculis nec, vulputate vitae, suscipit vel, tortor. Cras varius. Nullam fringilla pellentesque orci. Nulla eu ante pulvinar velit rhoncus lacinia. Morbi fringilla lacus quis arcu. Vestibulum sem quam, dapibus in, fringilla ut, venenatis ut, neque. $ fold -w 50 file.txt Lorem ipsum dolor sit amet, consectetuer adipiscin g elit. Curabitur dignissim venenatis pede. Quisque dui dui, ultricies ut, fac ilisis non, pulvinar non, purus. Duis quis arcu a purus volutpat iaculis. Mo rbi id dui in diam ornare dictum. Praesent consectetuer vehicula ipsum. Prae sent tortor massa, congue et, ornare in, posuere eget, pede. Vivamus rhoncus. Quisque lacus. In hac habitasse p latea dictumst. Nullam mauris tellus, sollicitudin non, semper eget, sodales non , pede. Phasellus varius ullamcorper libero. Fusce ipsum lorem, iaculis nec , vulputate vitae, suscipit vel, tortor. Cras varius. Nullam fringilla pellentesque orci. Nulla eu ante pulvinar velit rhoncus lacinia. Morbi fringilla lacus quis arcu. Vestibul um sem quam, dapibus in, fringilla ut, venenatis ut, neque. ==See also==