Linux Common commands

Cat: View file contents sequentially

TAC: View file contents in reverse

Head: View the contents of the file sequentially, default to the first 10 lines

Tail: Reverse View file contents, default after 10 lines

Sort: Sorting at the beginning of a line, example: CAT/ETC/PASSWD | Sort--The first letter is A,b,c,d, sorted out by default: According to ASCII code--and large arrangement

-T: Sorting using the specified delimiter, example CAT/ETC/PASSWD | Sort-t ': '-K 4---Semicolon-delimited with 4th column

Cut: Extracts a paragraph from each line in the file

-b:cut-b 2/tmp/test.txt---Only the second column of the output file Test.txt content

-C:CUT-C 1-5/tmp/test.txt---Output file test.txt 1-5 columns of content

-F1: Used in conjunction with-D, example: cut-f1-d 1 ', '/tmp/test.txt--outputs a comma-delimited section of characters

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Linux Common commands