Linux Learning note--linux file Management class fame and wealth detailed

Linux File Management class command detailed

Directory Management:

LS, CD, pwd, mkdir, rmdir, tree

File Management:

Touch, stat, file, RM, CP, MV, Nano

Date Management:

Touch, Clock, Hwclock, Cal

To view text:

Cat, TAC, more, less, head, tail

Cat: Connect and display

-N: Displays the line number of each row when displayed

-e: Show $ at end of each line

CTRL + C: End command

Split screen display:

More, less

MORE: Turn backwards

Less

Q Exit Command

Head: View Top N rows

Tail: View after n rows

-N

Tail-f: Look at the end of the file, do not exit, wait to display the subsequent append to this file new content;

Text Processing:

Cut, join, SED, awk,

Database: Databases

Relational database:

Table: two-dimensional table

Text file:

Cut

-D: Specifies the field delimiter, which is the default space

-F: Specify the fields to display

-f1,3 Show 1th and 3rd fields

-f1-3 Show 1th to 3rd fields

Text sort:

Sort

-N: Numeric sorting

-R: Descending sort

-T: Field delimiter

-K: Which field is the keyword to sort

-U: The same row is only displayed once after sorting

-F: Ignore character capitalization when sorting

Uniq: report duplicate rows or ignore duplicate rows-----------adjacent rows

-C: Shows the number of rows in a file that repeats

-D: Show only duplicate (adjacent) rows

Text Statistics :

WC (Word count): Displays the number of lines of words in bytes

-L: Number of rows

-L: The longest line contains the number of characters

-W: number of words

-C: Number of bytes

Character processing command:tr: convert or delete characters

TR "option" ... SET1 "SET2"

- d: Delete all characters that appear in the character set

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Linux Learning note--linux file Management class fame and wealth detailed