1.\" $OpenBSD: fold.1,v 1.7 2001/06/26 01:45:17 pjanzen Exp $ 2.\" $NetBSD: fold.1,v 1.5 1995/09/01 01:42:42 jtc Exp $ 3.\" 4.\" Copyright (c) 1980, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)fold.1 8.1 (Berkeley) 6/6/93 36.\" 37.Dd June 6, 1993 38.Dt FOLD 1 39.Os 40.Sh NAME 41.Nm fold 42.Nd fold long lines for finite width output device 43.Sh SYNOPSIS 44.Nm fold 45.Op Fl bs 46.Op Fl w Ar width 47.Op Ar file ... 48.Sh DESCRIPTION 49.Nm 50is a filter which folds the contents of the specified files, 51or the standard input if no files are specified, 52breaking the lines to have a maximum of 80 characters. 53.Pp 54The options are as follows: 55.Bl -tag -width Ds 56.It Fl b 57Count 58.Ar width 59in bytes rather than column positions. 60.It Fl s 61Fold line after the last blank character within the first 62.Ar width 63column positions (or bytes). 64.It Fl w Ar width 65Specifies a line width to use instead of the default 80 characters. 66.El 67.Pp 68The 69.Nm 70utility exits 0 on success or >0 if an error occurred. 71.Sh SEE ALSO 72.Xr expand 1 73.Sh STANDARDS 74The 75.Nm 76utility conforms to 77.St -p1003.2-92 . 78.Sh BUGS 79If underlining is present it may be messed up by folding. 80.Pp 81.Ar width 82should be a multiple of 8 if tabs are present, or the tabs should 83be expanded using 84.Xr expand 1 85before using 86.Nm fold . 87