29. Linux Shell common functions, cut

1. Description

Cut [Option] files

Cut-D 'separator '-F Fields

Retrieve some specific fields of the file with different fields

2. Options

-D: used to define the delimiter. The default Delimiter is the tab key, which is used with-f.

-F: The field to be retrieved. Separate the fields according to-D.

-C: Take the character (characters) as the single bit to retrieve the fixed metaspace; the value after-C specifies the number of characters to be output.

The-C and-F parameters can be described as follows:

N nth character or field

N-from the first character or field to the end of the file

N-M from N to M characters or fields

-M: From the first character to the MB character or field

3. Example

Echo $ PATH | cut-D:-F 3rd // fetch 5th rows and rows

Last | cut-D ''-F 1

Last | cut-C 9-15

Last | cut-C 9-

Last | cut-d ""-F 1 | sort | uniq

Last | cut-d ""-F 1 | sort | uniq-C

Reference

[1]Http://doc.linuxpk.com/425.html

[2]Http://linux.vbird.org/linux_basic/0320bash.php#split