CUT(1) | General Commands Manual | CUT(1) |
cut
— cut out
selected portions of each line of a file
cut |
-b list
[-n ] [file ...] |
cut |
-c list
[file ...] |
cut |
-f list
[-w | -d
delim] [-s ]
[file ...] |
The cut
utility cuts out selected portions
of each line (as specified by list) from each
file and writes them to the standard output. If no
file arguments are specified, or a file argument is a
single dash (‘-
’),
cut
reads from the standard input. The items
specified by list can be in terms of column position
or in terms of fields delimited by a special character. Column and field
numbering start from 1.
The list option argument is a comma or whitespace separated set of numbers and/or number ranges. Number ranges consist of a number, a dash (‘-’), and a second number and select the columns or fields from the first number to the second, inclusive. Numbers or number ranges may be preceded by a dash, which selects all columns or fields from 1 to the last number. Numbers or number ranges may be followed by a dash, which selects all columns or fields from the last number to the end of the line. Numbers and number ranges may be repeated, overlapping, and in any order. If a field or column is specified multiple times, it will appear only once in the output. It is not an error to select columns or fields not present in the input line.
The options are as follows:
-b
list-c
list-d
delim-f
list-d
option).
Output fields are separated by a single occurrence of the field delimiter
character.-n
-s
-w
The LANG
, LC_ALL
and LC_CTYPE
environment variables affect the
execution of cut
as described in
environ(7).
The cut
utility exits 0 on success,
and >0 if an error occurs.
Extract users' login names and shells from the system passwd(5) file as “name:shell” pairs:
cut -d : -f 1,7
/etc/passwd
Show the names and login times of the currently logged in users:
who | cut -c 1-16,26-38
The cut
utility conforms to
IEEE Std 1003.2-1992 (“POSIX.2”).
The -w
flag is an extension to the
specification.
A cut
command appeared in AT&T System
III UNIX.
August 3, 2017 | macOS 14.6 |