projects / unix-history / blame
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1 | .\" Copyright (c) 1989 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms are permitted | |
| 5 | .\" provided that the above copyright notice and this paragraph are | |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 15 | .\" | |
| 16 | .\" @(#)cut.1 5.1 (Berkeley) %G% | |
| 17 | .\" | |
| 18 | .TH CUT 1 "" | |
| 19 | .UC 7 | |
| 20 | .SH NAME | |
| 21 | cut - select portions of each line of a file | |
| 22 | .SH SYNOPSIS | |
| 23 | .nf | |
| 24 | cut -c list [file ...] | |
| 25 | cut -f list [-s] [-d string] [file ...] | |
| 26 | .fi | |
| 27 | .SH DESCRIPTION | |
| 28 | The | |
| 29 | .I cut | |
| 30 | utility selects portions of each line (as specified by | |
| 31 | .IR list ) | |
| 32 | from each | |
| 33 | .I file | |
| 34 | (or the standard input by default), and writes them to the | |
| 35 | standard output. | |
| 36 | The items specified by | |
| 37 | .I list | |
| 38 | can be in terms of column position or in terms of fields delimited | |
| 39 | by a special character. | |
| 40 | .PP | |
| 41 | .I List | |
| 42 | is a comma or whitespace separated set of one-based numbers and/or | |
| 43 | number ranges. | |
| 44 | Number ranges consist of a number, a dash (``-''), and a second number | |
| 45 | and select the fields or columns from the first number to the second, | |
| 46 | inclusive. | |
| 47 | Numbers or number ranges may be preceded by a dash, which selects all | |
| 48 | fields or columns from 1 to the first number. | |
| 49 | Numbers or number ranges may be followed by a dash, which selects all | |
| 50 | fields or columns from the last number to the end of the line. | |
| 51 | Numbers and number ranges may be repeated, overlapping, and in any order. | |
| 52 | It is not an error to select fields or columns not present in the | |
| 53 | input line. | |
| 54 | .PP | |
| 55 | The options are as follows: | |
| 56 | .TP | |
| 57 | -c list | |
| 58 | The | |
| 59 | .I list | |
| 60 | specifies character positions. | |
| 61 | .TP | |
| 62 | -f list | |
| 63 | The | |
| 64 | .I list | |
| 65 | specifies fields, delimited in the input by a single tab character. | |
| 66 | Output fields are separated by a single tab character. | |
| 67 | .TP | |
| 68 | -d char | |
| 69 | Use | |
| 70 | .I char | |
| 71 | as the field delimiter character instead of the tab character. | |
| 72 | .TP | |
| 73 | -s | |
| 74 | Suppresses lines with no field delimiter characters. | |
| 75 | Unless specified, lines with no delimiters are passed through unmodified. | |
| 76 | .PP | |
| 77 | .I Cut | |
| 78 | exit 0 on success, 1 if an error occurred. | |
| 79 | .SH ENVIRONMENT | |
| 80 | .SH "SEE ALSO" | |
| 81 | paste(1) | |
| 82 | .SH STANDARDS | |
| 83 | The | |
| 84 | .I cut | |
| 85 | function is expected to be POSIX 1003.2 compatible. |