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31 .\" @(#)cut.1 8.1 (Berkeley) 6/6/93
32 .\" $FreeBSD: head/usr.bin/cut/cut.1 243320 2012-11-20 01:57:21Z eadler $
39 .Nd cut out selected portions of each line of a file
50 .Op Fl w | Fl d Ar delim
56 utility cuts out selected portions of each line (as specified by
60 and writes them to the standard output.
63 arguments are specified, or a file argument is a single dash
66 reads from the standard input.
67 The items specified by
69 can be in terms of column position or in terms of fields delimited
70 by a special character.
71 Column and field numbering start from 1.
76 is a comma or whitespace separated set of increasing numbers and/or
78 Number ranges consist of a number, a dash
81 and select the columns or fields from the first number to the second,
83 Numbers or number ranges may be preceded by a dash, which selects all
84 columns or fields from 1 to the last number.
85 Numbers or number ranges may be followed by a dash, which selects all
86 columns or fields from the last number to the end of the line.
87 Numbers and number ranges may be repeated, overlapping, and in any order.
88 It is not an error to select columns or fields not present in the
91 The options are as follows:
92 .Bl -tag -width indent
96 specifies byte positions.
100 specifies character positions.
104 as the field delimiter character instead of the tab character.
108 specifies fields, separated in the input by the field delimiter character
112 Output fields are separated by a single occurrence of the field delimiter
115 Do not split multi-byte characters.
116 Characters will only be output if at least one byte is selected, and,
117 after a prefix of zero or more unselected bytes, the rest of the bytes
118 that form the character are selected.
120 Suppress lines with no field delimiter characters.
121 Unless specified, lines with no delimiters are passed through unmodified.
123 Use whitespace (spaces and tabs) as the delimiter.
124 Consecutive spaces and tabs count as one single field separator.
131 environment variables affect the execution of
138 Extract users' login names and shells from the system
144 .Dl "cut -d : -f 1,7 /etc/passwd"
146 Show the names and login times of the currently logged in users:
148 .Dl "who | cut -c 1-16,26-38"