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: src/usr.bin/split/split.1,v 1.3.2.6 2003/04/21 21:16:25 andreas Exp $ 34.\" $DragonFly: src/usr.bin/split/split.1,v 1.2 2003/06/17 04:29:31 dillon Exp $ 35.\" 36.Dd April 16, 1994 37.Dt SPLIT 1 38.Os 39.Sh NAME 40.Nm split 41.Nd split a file into pieces 42.Sh SYNOPSIS 43.Nm 44.Op Fl a Ar suffix_length 45.Op Fl b Ar byte_count[k|m] 46.Op Fl l Ar line_count 47.Op Fl p Ar pattern 48.Op Ar file Op Ar name 49.Sh DESCRIPTION 50The 51.Nm 52utility reads the given 53.Ar file 54and breaks it up into files of 1000 lines each. 55If 56.Ar file 57is a single dash 58.Pq Sq Fl 59or absent, 60.Nm 61reads from the standard input. 62.Pp 63The options are as follows: 64.Bl -tag -width Ds 65.It Fl a 66Use 67.Ar suffix_length 68letters to form the suffix of the file name. 69.It Fl b 70Create smaller files 71.Ar byte_count 72bytes in length. 73If 74.Dq Li k 75is appended to the number, the file is split into 76.Ar byte_count 77kilobyte pieces. 78If 79.Dq Li m 80is appended to the number, the file is split into 81.Ar byte_count 82megabyte pieces. 83.It Fl l 84Create smaller files 85.Ar n 86lines in length. 87.It Fl p Ar pattern 88The file is split whenever an input line matches 89.Ar pattern , 90which is interpreted as an extended regular expression. 91The matching line will be the first line of the next output file. 92This option is incompatible with the 93.Fl b 94and 95.Fl l 96options. 97.El 98.Pp 99If additional arguments are specified, the first is used as the name 100of the input file which is to be split. 101If a second additional argument is specified, it is used as a prefix 102for the names of the files into which the file is split. 103In this case, each file into which the file is split is named by the 104prefix followed by a lexically ordered suffix using 105.Ar suffix_length 106characters in the range 107.Dq Li a-z . 108If 109.Fl a 110is not specified, two letters are used as the suffix. 111.Pp 112If the 113.Ar name 114argument is not specified, the file is split into lexically ordered 115files named with prefixes in the range of 116.Dq Li x-z 117and with suffixes as above. 118.Sh SEE ALSO 119.Xr re_format 7 120.Sh STANDARDS 121The 122.Nm 123utility conforms to 124.St -p1003.1-2001 . 125.Sh HISTORY 126A 127.Nm 128command appeared in 129.At v3 . 130.Sh BUGS 131For historical reasons, if you specify 132.Ar name , 133.Nm 134can only create 676 separate 135files. 136The default naming convention allows 2028 separate files. 137The 138.Fl a 139option can be used to work around this limitation. 140.Pp 141The maximum line length for matching patterns is 65536. 142