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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)split.1 8.3 (Berkeley) 4/16/94 33.\" $FreeBSD$ 34.\" 35.Dd April 16, 1994 36.Dt SPLIT 1 37.Os 38.Sh NAME 39.Nm split 40.Nd split a file into pieces 41.Sh SYNOPSIS 42.Nm 43.Op Fl a Ar suffix_length 44.Op Fl b Ar byte_count[k|m] 45.Op Fl l Ar line_count 46.Op Fl p Ar pattern 47.Op Ar file Op Ar name 48.Sh DESCRIPTION 49The 50.Nm 51utility reads the given 52.Ar file 53and breaks it up into files of 1000 lines each. 54If 55.Ar file 56is a single dash 57.Pq Sq Fl 58or absent, 59.Nm 60reads from the standard input. 61.Pp 62The options are as follows: 63.Bl -tag -width Ds 64.It Fl a 65Use 66.Ar suffix_length 67letters to form the suffix of the file name. 68.It Fl b 69Create smaller files 70.Ar byte_count 71bytes in length. 72If 73.Dq Li k 74is appended to the number, the file is split into 75.Ar byte_count 76kilobyte pieces. 77If 78.Dq Li m 79is appended to the number, the file is split into 80.Ar byte_count 81megabyte pieces. 82.It Fl l 83Create smaller files 84.Ar n 85lines in length. 86.It Fl p Ar pattern 87The file is split whenever an input line matches 88.Ar pattern , 89which is interpreted as an extended regular expression. 90The matching line will be the first line of the next output file. 91This option is incompatible with the 92.Fl b 93and 94.Fl l 95options. 96.El 97.Pp 98If additional arguments are specified, the first is used as the name 99of the input file which is to be split. 100If a second additional argument is specified, it is used as a prefix 101for the names of the files into which the file is split. 102In this case, each file into which the file is split is named by the 103prefix followed by a lexically ordered suffix using 104.Ar suffix_length 105characters in the range 106.Dq Li a-z . 107If 108.Fl a 109is not specified, two letters are used as the suffix. 110.Pp 111If the 112.Ar name 113argument is not specified, the file is split into lexically ordered 114files named with prefixes in the range of 115.Dq Li x-z 116and with suffixes as above. 117.Sh BUGS 118For historical reasons, if you specify 119.Ar name , 120.Nm 121can only create 676 separate 122files. 123The default naming convention allows 2028 separate files. 124The 125.Fl a 126option can be used to work around this limitation. 127.Pp 128The maximum line length for matching patterns is 65536. 129.Sh SEE ALSO 130.Xr csplit 1 , 131.Xr re_format 7 132.Sh STANDARDS 133The 134.Nm 135utility conforms to 136.St -p1003.1-2001 . 137.Sh HISTORY 138A 139.Nm 140command appeared in 141.At v3 . 142