1.\" Copyright (c) 1990, 1991, 1993, 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)split.1 8.3 (Berkeley) 4/16/94 29.\" $FreeBSD: src/usr.bin/split/split.1,v 1.3.2.6 2003/04/21 21:16:25 andreas Exp $ 30.\" 31.Dd May 25, 2013 32.Dt SPLIT 1 33.Os 34.Sh NAME 35.Nm split 36.Nd split a file into pieces 37.Sh SYNOPSIS 38.Nm 39.Fl d 40.Op Fl a Ar suffix_length 41.Op Fl b Ar byte_count[suffix] 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 50and breaks it up into files of 1000 lines each. 51If 52.Ar file 53is a single dash 54.Pq Sq Fl 55or absent, 56.Nm 57reads from the standard input. 58.Pp 59The options are as follows: 60.Bl -tag -width Ds 61.It Fl a Ar suffix_length 62Use 63.Ar suffix_length 64letters to form the suffix of the file name. 65.It Fl b Ar byte_count[suffix] 66Create smaller files 67.Ar byte_count 68bytes in length. 69An optional suffix (as documented in 70.Xr dehumanize_number 3 ) 71is supported. 72.It Fl d 73Use a numeric suffix instead of an alphabetic suffix. 74.It Fl l Ar line_count 75Create smaller files 76.Ar n 77lines in length. 78.It Fl p Ar pattern 79The file is split whenever an input line matches 80.Ar pattern , 81which is interpreted as an extended regular expression. 82The matching line will be the first line of the next output file. 83This option is incompatible with the 84.Fl b 85and 86.Fl l 87options. 88.El 89.Pp 90If additional arguments are specified, the first is used as the name 91of the input file which is to be split. 92If a second additional argument is specified, it is used as a prefix 93for the names of the files into which the file is split. 94In this case, each file into which the file is split is named by the 95prefix followed by a lexically ordered suffix using 96.Ar suffix_length 97characters in the range 98.Dq Li a-z . 99If 100.Fl a 101is not specified, two letters are used as the suffix. 102.Pp 103If the 104.Ar name 105argument is not specified, the file is split into lexically ordered 106files named with prefix 107.Dq Li x 108and with suffixes as above. 109.Sh SEE ALSO 110.Xr re_format 7 111.Sh STANDARDS 112The 113.Nm 114utility conforms to 115.St -p1003.1-2001 . 116.Sh HISTORY 117A 118.Nm 119command appeared in 120.At v3 . 121.Sh BUGS 122The maximum line length for matching patterns is 65536. 123