FOLD(1) General Commands Manual FOLD(1)
fold – fold long lines for finite width output device
fold [-bs] [-w width] [file ...]
The fold utility is a filter which folds the contents of the specified
files, or the standard input if no files are specified, breaking the lines
to have a maximum of 80 columns.
The options are as follows:
-b Count width in bytes rather than column positions.
-s Fold line after the last blank character within the first width
column positions (or bytes).
Specify a line width to use instead of the default 80 columns.
Width should be a multiple of 8 if tabs are present, or the tabs
should be expanded using expand(1) before using fold.
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of
fold as described in environ(7).
The fold utility conforms to IEEE Std 1003.1-2001 (“POSIX.1”).
If underlining is present it may be messed up by folding.
macOS 12.1 August 2, 2004 macOS 12.1