.\"	$OpenBSD: fold.1,v 1.12 2007/05/31 19:20:10 jmc Exp $
.\"	$NetBSD: fold.1,v 1.5 1995/09/01 01:42:42 jtc Exp $
.\"
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.\"	@(#)fold.1	8.1 (Berkeley) 6/6/93
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt FOLD 1
.Os
.Sh NAME
.Nm fold
.Nd fold long lines for finite width output device
.Sh SYNOPSIS
.Nm fold
.Op Fl bs
.Op Fl w Ar width
.Op Ar file ...
.Sh DESCRIPTION
.Nm
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 characters.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl b
Count
.Ar width
in bytes rather than column positions.
.It Fl s
Fold line after the last blank character within the first
.Ar width
column positions (or bytes).
.It Fl w Ar width
Specifies a line width to use instead of the default 80 characters.
.El
.Pp
.Ex -std fold
.Sh SEE ALSO
.Xr expand 1
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2004
specification.
.Sh BUGS
If underlining (see
.Xr ul 1 )
is present it may be messed up by folding.
.Pp
.Ar width
should be a multiple of 8 if tabs are present, or the tabs should
be expanded using
.Xr expand 1
before using
.Nm fold .