Linux Beginner Advanced file Management WC Uniq cut diff sort tr

WC calculates the number of lines , words , and bytes of a file

# wc/etc/passwd

1800/etc/passwd

# wc-l/ETC/PASSWD

40/etc/passwd

# wc-w/ETC/PASSWD

59/etc/passwd

# wc-c/ETC/PASSWD

1800/etc/passwd

grep Regular Introduction

^ Beginning of the line

$ End of line

V Take Back

n Display Line numbers

C Count Rows

         

diff compare two files to differences

d deleted (delete) -A added (append)-C changed (change )

CP/ETC/PASSWD PASSWD1

Delete a few lines and add a few lines to see the effect.

DIFF/ETC/PASSWD PASSWD1

Uniq to File Weight

Uniq-c file Displays the number of occurrences of duplicate rows in the file files count times

uniq-d file displays only duplicate rows, no duplicates are displayed

cut extracts files by column

- d indicates the column delimiter -F Select the output region -C to specify the character position

# cut-d:-F 1,7/etc/passwd |head-n 2

Root:/bin/bash

Bin:/sbin/nologin

# cut-c 1-3,6-9/etc/passwd |head-n 2

Substitution of tr characters for deletion

- d Delete

# tr-d: </etc/passwd |head-n 2

Replace

# TR ' ABC ' ABC ' </ETC/PASSWD |head-n 2

# TR ' abc ' A ' </etc/passwd |head-n 2

# tr ' A-Z ' A-Z ' </etc/passwd |head-n 2

sort sorted output

Sort By default in the order of the first character

- R Reverse order

-U Go Heavy

- n Sort by number

- t indicates that the delimiter is in conjunction with -K

- k Sort by specified field

# sort-t:-K 3/etc/passwd

Split split file split file named Xaa

-B (bytes) size

-L Number of rows

Linux Beginner Advanced file Management WC Uniq cut diff sort tr