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Annotation of src/usr.bin/cut/cut.1, Revision 1.7

1.7     ! aaron       1: .\"    $OpenBSD: cut.1,v 1.6 2000/03/05 20:09:21 aaron Exp $
1.1       deraadt     2: .\"    $NetBSD: cut.1,v 1.6 1995/10/02 20:19:26 jtc Exp $
                      3: .\"
                      4: .\" Copyright (c) 1989, 1990, 1993
                      5: .\"    The Regents of the University of California.  All rights reserved.
                      6: .\"
                      7: .\" This code is derived from software contributed to Berkeley by
                      8: .\" the Institute of Electrical and Electronics Engineers, Inc.
                      9: .\"
                     10: .\" Redistribution and use in source and binary forms, with or without
                     11: .\" modification, are permitted provided that the following conditions
                     12: .\" are met:
                     13: .\" 1. Redistributions of source code must retain the above copyright
                     14: .\"    notice, this list of conditions and the following disclaimer.
                     15: .\" 2. Redistributions in binary form must reproduce the above copyright
                     16: .\"    notice, this list of conditions and the following disclaimer in the
                     17: .\"    documentation and/or other materials provided with the distribution.
                     18: .\" 3. All advertising materials mentioning features or use of this software
                     19: .\"    must display the following acknowledgement:
                     20: .\"    This product includes software developed by the University of
                     21: .\"    California, Berkeley and its contributors.
                     22: .\" 4. Neither the name of the University nor the names of its contributors
                     23: .\"    may be used to endorse or promote products derived from this software
                     24: .\"    without specific prior written permission.
                     25: .\"
                     26: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     27: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     28: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     29: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     30: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     31: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     32: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     33: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     34: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     35: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     36: .\" SUCH DAMAGE.
                     37: .\"
                     38: .\"     @(#)cut.1      8.1 (Berkeley) 6/6/93
                     39: .\"
                     40: .Dd June 6, 1993
                     41: .Dt CUT 1
                     42: .Os
                     43: .Sh NAME
                     44: .Nm cut
                     45: .Nd select portions of each line of a file
                     46: .Sh SYNOPSIS
                     47: .Nm cut
                     48: .Fl b Ar list
                     49: .Op Fl n
                     50: .Op Ar
                     51: .Nm cut
                     52: .Fl c Ar list
                     53: .Op Ar
                     54: .Nm cut
                     55: .Fl f Ar list
                     56: .Op Fl d Ar delim
                     57: .Op Fl s
                     58: .Op Ar
                     59: .Sh DESCRIPTION
                     60: The
1.5       aaron      61: .Nm
1.1       deraadt    62: utility selects portions of each line (as specified by
1.6       aaron      63: .Ar list )
1.1       deraadt    64: from each
                     65: .Ar file
                     66: (or the standard input by default), and writes them to the
                     67: standard output.
                     68: The items specified by
                     69: .Ar list
                     70: can be in terms of column position or in terms of fields delimited
1.6       aaron      71: by a special character.
                     72: Column numbering starts from 1.
1.1       deraadt    73: .Pp
1.3       aaron      74: .Ar list
1.1       deraadt    75: is a comma or whitespace separated set of increasing numbers and/or
                     76: number ranges.
                     77: Number ranges consist of a number, a dash
1.3       aaron      78: .Pq Sq \- ,
1.1       deraadt    79: and a second number
1.6       aaron      80: which select the fields or columns from the first number to the second,
1.1       deraadt    81: inclusive.
                     82: Numbers or number ranges may be preceded by a dash, which selects all
                     83: fields or columns from 1 to the first number.
                     84: Numbers or number ranges may be followed by a dash, which selects all
                     85: fields or columns from the last number to the end of the line.
                     86: Numbers and number ranges may be repeated, overlapping, and in any order.
                     87: It is not an error to select fields or columns not present in the
                     88: input line.
                     89: .Pp
                     90: The options are as follows:
1.7     ! aaron      91: .Bl -tag -width Ds
1.1       deraadt    92: .It Fl b Ar list
1.4       aaron      93: The
1.1       deraadt    94: .Ar list
                     95: specifies byte positions.
                     96: .It Fl c Ar list
                     97: The
                     98: .Ar list
                     99: specifies character positions.
                    100: .It Fl d Ar string
                    101: Use the first character of
                    102: .Ar string
                    103: as the field delimiter character instead of the tab character.
                    104: .It Fl f Ar list
                    105: The
                    106: .Ar list
                    107: specifies fields, delimited in the input by a single tab character.
                    108: Output fields are separated by a single tab character.
                    109: .It Fl n
                    110: Do not split multi-byte characters.
                    111: .It Fl s
                    112: Suppresses lines with no field delimiter characters.
                    113: Unless specified, lines with no delimiters are passed through unmodified.
                    114: .El
                    115: .Pp
1.3       aaron     116: The
1.5       aaron     117: .Nm
1.3       aaron     118: utility exits 0 on success or 1 if an error occurred.
1.1       deraadt   119: .Sh SEE ALSO
                    120: .Xr paste 1
                    121: .Sh STANDARDS
                    122: The
1.5       aaron     123: .Nm
1.1       deraadt   124: utility conforms to
                    125: .St -p1003.2-92 .