FOLD(1)
NAME
fold − fold long lines for finite width output device
USAGE
fold [ −width ] [ file ... ]
DESCRIPTION
Fold is a filter that folds the contents of the specified files, breaking the lines to have a maximum width equal to width (the default is 80 characters). If no files are specified, fold uses the standard input. Width should be a multiple of 8 if tabs are present. If necessary, the tabs should be expanded using expand (1) before fold is executed.
CAUTIONS
If underlining is present in the file, it may be messed up by folding.