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130 lines
3.9 KiB
Groff
130 lines
3.9 KiB
Groff
.\" Copyright (c) 1990, 1991, 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)split.1 8.3 (Berkeley) 4/16/94
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.\" $FreeBSD$
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.\"
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.Dd April 16, 1994
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.Dt SPLIT 1
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.Os
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.Sh NAME
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.Nm split
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.Nd split a file into pieces
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.Sh SYNOPSIS
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.Nm
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.Op Fl a Ar suffix_length
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.Op Fl b Ar byte_count[k|m]
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.Op Fl l Ar line_count
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.Op Fl p Ar pattern
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.Op Ar file Op Ar name
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.Sh DESCRIPTION
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The
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.Nm
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utility reads the given
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.Ar file
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(or standard input if no file is specified)
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and breaks it up into files of 1000 lines each.
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.Pp
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl a
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Use
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.Ar suffix_length
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letters to form the suffix of the file name.
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.It Fl b
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Create smaller files
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.Ar byte_count
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bytes in length.
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If
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.Dq Li k
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is appended to the number, the file is split into
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.Ar byte_count
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kilobyte pieces.
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If
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.Dq Li m
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is appended to the number, the file is split into
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.Ar byte_count
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megabyte pieces.
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.It Fl l
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Create smaller files
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.Ar n
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lines in length.
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.It Fl p Ar pattern
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The file is split whenever an input line matches
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.Ar pattern ,
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which is interpreted as an extended regular expression.
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The matching line will be the first line of the next output file.
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This option is incompatible with the
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.Fl b
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and
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.Fl l
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options.
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.El
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.Pp
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If additional arguments are specified, the first is used as the name
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of the input file which is to be split.
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If a second additional argument is specified, it is used as a prefix
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for the names of the files into which the file is split.
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In this case, each file into which the file is split is named by the
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prefix followed by a lexically ordered suffix using
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.Ar suffix_length
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characters in the range
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.Dq Li a-z .
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If
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.Fl a
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is not specified, two letters are used as the suffix.
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.Pp
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If the
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.Ar name
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argument is not specified, the file is split into lexically ordered
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files named with prefixes in the range of
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.Dq Li x-z
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and with suffixes as above.
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.Sh BUGS
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For historical reasons, if you specify
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.Ar name ,
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.Nm
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can only create 676 separate
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files.
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The default naming convention allows 2028 separate files.
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The
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.Fl a
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option can be used to work around this limitation.
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.Pp
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The maximum line length for matching patterns is 65536.
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.Sh SEE ALSO
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.Xr re_format 7
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v6 .
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