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.\" $FreeBSD$ 30.\" 31.Dd May 9, 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 l Ar line_count 41.Op Fl a Ar suffix_length 42.Op Ar file Op Ar prefix 43.Nm 44.Fl d 45.Fl b Ar byte_count Ns 46.Oo 47.Sm off 48.Cm K | k | M | m | G | g 49.Sm on 50.Oc 51.Op Fl a Ar suffix_length 52.Op Ar file Op Ar prefix 53.Nm 54.Fl d 55.Fl n Ar chunk_count 56.Op Fl a Ar suffix_length 57.Op Ar file Op Ar prefix 58.Nm 59.Fl d 60.Fl p Ar pattern 61.Op Fl a Ar suffix_length 62.Op Ar file Op Ar prefix 63.Sh DESCRIPTION 64The 65.Nm 66utility reads the given 67.Ar file 68and breaks it up into files of 1000 lines each 69(if no options are specified), leaving the 70.Ar file 71unchanged. 72If 73.Ar file 74is a single dash 75.Pq Sq Fl 76or absent, 77.Nm 78reads from the standard input. 79.Pp 80The options are as follows: 81.Bl -tag -width indent 82.It Fl a Ar suffix_length 83Use 84.Ar suffix_length 85letters to form the suffix of the file name. 86.It Fl b Ar byte_count Ns Oo 87.Sm off 88.Cm K | k | M | m | G | g 89.Sm on 90.Oc 91Create split files 92.Ar byte_count 93bytes in length. 94If 95.Cm k 96or 97.Cm K 98is appended to the number, the file is split into 99.Ar byte_count 100kilobyte pieces. 101If 102.Cm m 103or 104.Cm M 105is appended to the number, the file is split into 106.Ar byte_count 107megabyte pieces. 108If 109.Cm g 110or 111.Cm G 112is appended to the number, the file is split into 113.Ar byte_count 114gigabyte pieces. 115.It Fl d 116Use a numeric suffix instead of a alphabetic suffix. 117.It Fl l Ar line_count 118Create split files 119.Ar line_count 120lines in length. 121.It Fl n Ar chunk_count 122Split file into 123.Ar chunk_count 124smaller files. 125.It Fl p Ar pattern 126The file is split whenever an input line matches 127.Ar pattern , 128which is interpreted as an extended regular expression. 129The matching line will be the first line of the next output file. 130This option is incompatible with the 131.Fl b 132and 133.Fl l 134options. 135.El 136.Pp 137If additional arguments are specified, the first is used as the name 138of the input file which is to be split. 139If a second additional argument is specified, it is used as a prefix 140for the names of the files into which the file is split. 141In this case, each file into which the file is split is named by the 142prefix followed by a lexically ordered suffix using 143.Ar suffix_length 144characters in the range 145.Dq Li a Ns - Ns Li z . 146If 147.Fl a 148is not specified, two letters are used as the suffix. 149.Pp 150If the 151.Ar prefix 152argument is not specified, the file is split into lexically ordered 153files named with the prefix 154.Dq Li x 155and with suffixes as above. 156.Sh ENVIRONMENT 157The 158.Ev LANG , LC_ALL , LC_CTYPE 159and 160.Ev LC_COLLATE 161environment variables affect the execution of 162.Nm 163as described in 164.Xr environ 7 . 165.Sh EXIT STATUS 166.Ex -std 167.Sh SEE ALSO 168.Xr csplit 1 , 169.Xr re_format 7 170.Sh STANDARDS 171The 172.Nm 173utility conforms to 174.St -p1003.1-2001 . 175.Sh HISTORY 176A 177.Nm 178command appeared in 179.At v3 . 180.Sh BUGS 181The maximum line length for matching patterns is 65536. 182