Linux commands, cut,sort,wc,uniq,tee instructions

cut : Intercepts a field

Syntax: cut-d "separator character" [-CF] n here n is the number

-D: followed by delimited characters, delimited by double quotation marks

-C: followed by the first few characters

-F: The next section is followed by the number of blocks

-D followed by the delimiter character, where a colon is used as the split character, and-F 1 is the first paragraph, and the space between-F and 1 is optional.

The-C can be either 1 digits n or an interval n1-n2, or multiple digits n1,n2,n3

Sort: Used for sorting

Syntax: sort [-t delimiter] [-KN1,N2] [-NRU] Here's N1 < N2

-T delimiter: function with the-D one meaning of cut

-N: Sorting with pure numbers

-R: Reverse Sort

-U: To repeat

-KN1,N2: Sorted by N1 interval to N2 interval, can only write-kn1, sort N1 field

WC : Statistics The number of lines, characters, and words of a document, the commonly used options are:

-L: Count rows

-M: Statistics of characters

-W: Number of statistical words

uniq : To repeat the line, the author used only one of the options:

-C: Count the number of repeated rows and write the number of lines in front

There is a point to note that before the uniq, you need to sort and then uniq, otherwise you will not get what you want, the author of the above experiment has been sorted so omitted that step.

Tee : followed by the file name, similar to redirect ">", but the specific gravity of a function, the file is written in the following file, while also displayed on the screen.

Linux commands, cut,sort,wc,uniq,tee instructions