1.\" Copyright (c) 1989, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Institute of Electrical and Electronics Engineers, Inc. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)cut.1 8.1 (Berkeley) 6/6/93 36.\" $FreeBSD$ 37.\" 38.Dd December 21, 2006 39.Dt CUT 1 40.Os 41.Sh NAME 42.Nm cut 43.Nd cut out selected portions of each line of a file 44.Sh SYNOPSIS 45.Nm 46.Fl b Ar list 47.Op Fl n 48.Op Ar 49.Nm 50.Fl c Ar list 51.Op Ar 52.Nm 53.Fl f Ar list 54.Op Fl d Ar delim 55.Op Fl s 56.Op Ar 57.Sh DESCRIPTION 58The 59.Nm 60utility cuts out selected portions of each line (as specified by 61.Ar list ) 62from each 63.Ar file 64and writes them to the standard output. 65If no 66.Ar file 67arguments are specified, or a file argument is a single dash 68.Pq Sq Fl , 69.Nm 70reads from the standard input. 71The items specified by 72.Ar list 73can be in terms of column position or in terms of fields delimited 74by a special character. 75Column numbering starts from 1. 76.Pp 77The 78.Ar list 79option argument 80is a comma or whitespace separated set of increasing numbers and/or 81number ranges. 82Number ranges consist of a number, a dash 83.Pq Sq \- , 84and a second number 85and select the fields or columns from the first number to the second, 86inclusive. 87Numbers or number ranges may be preceded by a dash, which selects all 88fields or columns from 1 to the last number. 89Numbers or number ranges may be followed by a dash, which selects all 90fields or columns from the last number to the end of the line. 91Numbers and number ranges may be repeated, overlapping, and in any order. 92It is not an error to select fields or columns not present in the 93input line. 94.Pp 95The options are as follows: 96.Bl -tag -width indent 97.It Fl b Ar list 98The 99.Ar list 100specifies byte positions. 101.It Fl c Ar list 102The 103.Ar list 104specifies character positions. 105.It Fl d Ar delim 106Use 107.Ar delim 108as the field delimiter character instead of the tab character. 109.It Fl f Ar list 110The 111.Ar list 112specifies fields, separated in the input by the field delimiter character 113(see the 114.Fl d 115option.) 116Output fields are separated by a single occurrence of the field delimiter 117character. 118.It Fl n 119Do not split multi-byte characters. 120Characters will only be output if at least one byte is selected, and, 121after a prefix of zero or more unselected bytes, the rest of the bytes 122that form the character are selected. 123.It Fl s 124Suppress lines with no field delimiter characters. 125Unless specified, lines with no delimiters are passed through unmodified. 126.El 127.Sh ENVIRONMENT 128The 129.Ev LANG , LC_ALL 130and 131.Ev LC_CTYPE 132environment variables affect the execution of 133.Nm 134as described in 135.Xr environ 7 . 136.Sh EXIT STATUS 137.Ex -std 138.Sh EXAMPLES 139Extract users' login names and shells from the system 140.Xr passwd 5 141file as 142.Dq name:shell 143pairs: 144.Pp 145.Dl "cut -d : -f 1,7 /etc/passwd" 146.Pp 147Show the names and login times of the currently logged in users: 148.Pp 149.Dl "who | cut -c 1-16,26-38" 150.Sh SEE ALSO 151.Xr colrm 1 , 152.Xr paste 1 153.Sh STANDARDS 154The 155.Nm 156utility conforms to 157.St -p1003.2-92 . 158.Sh HISTORY 159A 160.Nm 161command appeared in 162.Tn AT&T 163System III 164.Ux . 165