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  Linux cut Command Study Notes
  Add Date : 2018-11-21      
  Cut command is one of the most commonly used commands Linux.

As its name suggests, cut job is to "cut", specifically, is in charge of cutting data in a file. cut each act is a processing target, and sed this mechanism is the same.

Cut cut metric command in three ways:

Byte Cut: -b (byte)
Cut by character: -c (character)
By Shear: -f (field) to specify the time domain by shear delimiter, the default delimiter is a tab (\ t).

In addition, cut command also supports a range of digital representation,

      N N'th byte, character or field, counted from 1

      N- from N'th byte, character or field, to end of line

      N-M from N'th to M'th (included) byte, character or field

      -M From first to M'th (included) byte, character or field

Examples given to illustrate:

Cut in bytes
date | cut -b 1-5
date | cut -b 1-6
date | cut -b 1-7
Year 2014

As can be seen from the above example the Chinese character "years" accounted for 3 bytes

In accordance with the character cut

October 10, 2014 Friday 14:48:16 CST
date | cut -c 1,3,4

Positioning a plurality of separated by commas

In accordance with Shear

October 10, 2014 Friday 14:46:09 CST
date | cut -d "" -f 4,5
Friday 14:46:12

-d delimiter and indicates delimiter must be a single character.
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