1.\" $OpenBSD: split.1,v 1.9 2003/06/03 02:56:16 millert Exp $ 2.\" $NetBSD: split.1,v 1.5 1994/12/21 08:20:35 jtc Exp $ 3.\" 4.\" Copyright (c) 1990, 1991, 1993, 1994 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. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)split.1 8.3 (Berkeley) 4/16/94 32.\" 33.Dd April 16, 1994 34.Dt SPLIT 1 35.Os 36.Sh NAME 37.Nm split 38.Nd split a file into pieces 39.Sh SYNOPSIS 40.Nm split 41.Op Fl b Ar byte_count[k|m] 42.Op Fl l Ar line_count 43.Op Fl p Ar pattern 44.Op Ar file Op Ar name 45.Sh DESCRIPTION 46The 47.Nm 48utility reads the given 49.Ar file 50(or standard input if no file is specified) 51and breaks it up into files of 1000 lines each. 52.Pp 53The options are as follows: 54.Bl -tag -width Ds 55.It Fl b 56Create smaller files 57.Ar byte_count 58bytes in length. 59If 60.Sq k 61is appended to the number, the file is split into 62.Ar byte_count 63kilobyte pieces. 64If 65.Sq m 66is appended to the number, the file is split into 67.Ar byte_count 68megabyte pieces. 69.It Fl l 70Create smaller files 71.Ar n 72lines in length. 73.It Fl p Ar pattern 74The file is split whenever an input line matches 75.Ar pattern , 76which is interpreted as an extended regular expression. 77The matching line will be the first line of the next output file. 78This option is incompatible with the 79.Fl b 80and 81.Fl l 82options. 83.El 84.Pp 85If additional arguments are specified, the first is used as the name 86of the input file which is to be split. 87If a second additional argument is specified, it is used as a prefix 88for the names of the files into which the file is split. 89In this case, each file into which the file is split is named by the 90prefix followed by a lexically ordered suffix in the range of 91.Dq aa-zz . 92.Pp 93If the 94.Ar name 95argument is not specified, the file is split into lexically ordered 96files named in the range of 97.Dq xaa-zzz . 98.Sh SEE ALSO 99.Xr re_format 7 100.Sh HISTORY 101A 102.Nm 103command appeared in 104.At v3 . 105.Sh BUGS 106For historical reasons, if you specify 107.Ar name , 108.Nm 109can only create 676 separate 110files. 111The default naming convention allows 2028 separate files. 112.Pp 113The maximum line length for matching patterns is 65536. 114