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
-s
-w
widthfold
.The LANG
, LC_ALL
and LC_CTYPE
environment variables affect the
execution of fold
as described in
environ(7).
Fold text in standard input with a width of 20 columns:
$ echo "I am smart enough to know that I am dumb" | fold -w 15 I am smart enou gh to know that I am dumb
Same as above but breaking lines after the last blank character:
$ echo "I am smart enough to know that I am dumb" | fold -s -w 15 I am smart enough to know that I am dumb
The fold
utility conforms to
IEEE Std 1003.1-2001 (“POSIX.1”).
The fold
utility first appeared in
1BSD. It was rewritten for
4.3BSD-Reno to improve speed and modernize style.
The -b
and -s
options were
added to NetBSD 1.0 for IEEE Std
1003.2 (“POSIX.2”) compliance.
Bill Joy wrote the original version of
fold
on June 28, 1977. Kevin
Ruddy rewrote the command in 1990, and J. T.
Conklin added the missing options in 1993.
If underlining (see ul(1)) is present it may be messed up by folding.
October 29, 2020 | macOS 14.6 |