1.\" $NetBSD: cut.1,v 1.14 2006/07/31 09:39:59 jnemeth Exp $ 2.\" 3.\" Copyright (c) 1989, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" the Institute of Electrical and Electronics Engineers, Inc. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. Neither the name of the University nor the names of its contributors 18.\" may be used to endorse or promote products derived from this software 19.\" without specific prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33.\" @(#)cut.1 8.1 (Berkeley) 6/6/93 34.\" 35.Dd July 31, 2006 36.Dt CUT 1 37.Os 38.Sh NAME 39.Nm cut 40.Nd select portions of each line of a file 41.Sh SYNOPSIS 42.Nm 43.Fl b Ar list 44.Op Fl n 45.Op Ar 46.Nm 47.Fl c Ar list 48.Op Ar 49.Nm 50.Fl f Ar list 51.Op Fl d Ar delim 52.Op Fl s 53.Op Ar 54.Sh DESCRIPTION 55The 56.Nm 57utility selects portions of each line (as specified by 58.Ar list ) 59from each 60.Ar file 61and writes them to the 62standard output. 63If the 64.Ar file 65argument is a single dash 66.Pq Sq - 67or no 68.Ar file 69arguments were specified, lines are read from the standard input. 70The items specified by 71.Ar list 72can be in terms of column position or in terms of fields delimited 73by a special character. Column numbering starts from 1. 74.Pp 75.Ar List 76is a comma or whitespace separated set of increasing numbers and/or 77number ranges. 78Number ranges consist of a number, a dash 79.Pq Li \- , 80and a second number 81and select the fields or columns from the first number to the second, 82inclusive. 83Numbers or number ranges may be preceded by a dash, which selects all 84fields or columns from 1 to the first number. 85Numbers or number ranges may be followed by a dash, which selects all 86fields or columns from the last number to the end of the line. 87Numbers and number ranges may be repeated, overlapping, and in any order. 88It is not an error to select fields or columns not present in the 89input line. 90.Pp 91The options are as follows: 92.Bl -tag -width Fl 93.It Fl b Ar list 94The 95.Ar list 96specifies byte positions. 97.It Fl c Ar list 98The 99.Ar list 100specifies character positions. 101.It Fl d Ar string 102Use the first character of 103.Ar string 104as the field delimiter character instead of the tab character. 105.It Fl f Ar list 106The 107.Ar list 108specifies fields, delimited in the input by a single tab character. 109Output fields are separated by a single tab character. 110.It Fl n 111Do not split multi-byte characters. 112.It Fl s 113Suppresses lines with no field delimiter characters. 114Unless specified, lines with no delimiters are passed through unmodified. 115.El 116.Sh EXIT STATUS 117.Nm 118exits 0 on success, 1 if an error occurred. 119.Sh SEE ALSO 120.Xr paste 1 121.Sh STANDARDS 122The 123.Nm 124utility conforms to 125.St -p1003.2-92 . 126