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File: coreutils.info, Node: cut invocation, Next: paste invocation, Up: Operating on fields within a line
8.1 `cut': Print selected parts of lines
========================================
`cut' writes to standard output selected parts of each line of each
input file, or standard input if no files are given or for a file name
of `-'. Synopsis:
cut [OPTION]... [FILE]...
In the table which follows, the BYTE-LIST, CHARACTER-LIST, and
FIELD-LIST are one or more numbers or ranges (two numbers separated by
a dash) separated by commas. Bytes, characters, and fields are
numbered starting at 1. Incomplete ranges may be given: `-M' means
`1-M'; `N-' means `N' through end of line or last field. The list
elements can be repeated, can overlap, and can be specified in any
order; but the selected input is written in the same order that it is
read, and is written exactly once.
The program accepts the following options. Also see *Note Common
options::.
`-b BYTE-LIST'
`--bytes=BYTE-LIST'
Select for printing only the bytes in positions listed in
BYTE-LIST. Tabs and backspaces are treated like any other
character; they take up 1 byte. If an output delimiter is
specified, (see the description of `--output-delimiter'), then
output that string between ranges of selected bytes.
`-c CHARACTER-LIST'
`--characters=CHARACTER-LIST'
Select for printing only the characters in positions listed in
CHARACTER-LIST. The same as `-b' for now, but
internationalization will change that. Tabs and backspaces are
treated like any other character; they take up 1 character. If an
output delimiter is specified, (see the description of
`--output-delimiter'), then output that string between ranges of
selected bytes.
`-f FIELD-LIST'
`--fields=FIELD-LIST'
Select for printing only the fields listed in FIELD-LIST. Fields
are separated by a TAB character by default. Also print any line
that contains no delimiter character, unless the
`--only-delimited' (`-s') option is specified
`-d INPUT_DELIM_BYTE'
`--delimiter=INPUT_DELIM_BYTE'
With `-f', use the first byte of INPUT_DELIM_BYTE as the input
fields separator (default is TAB).
`-n'
Do not split multi-byte characters (no-op for now).
`-s'
`--only-delimited'
For `-f', do not print lines that do not contain the field
separator character. Normally, any line without a field separator
is printed verbatim.
`--output-delimiter=OUTPUT_DELIM_STRING'
With `-f', output fields are separated by OUTPUT_DELIM_STRING.
The default with `-f' is to use the input delimiter. When using
`-b' or `-c' to select ranges of byte or character offsets (as
opposed to ranges of fields), output OUTPUT_DELIM_STRING between
non-overlapping ranges of selected bytes.
`--complement'
This option is a GNU extension. Select for printing the
complement of the bytes, characters or fields selected with the
`-b', `-c' or `-f' options. In other words, do _not_ print the
bytes, characters or fields specified via those options. This
option is useful when you have many fields and want to print all
but a few of them.
An exit status of zero indicates success, and a nonzero value
indicates failure.
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Under GNU General Public License
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