3, Grep,vim, compression function detailed

Morning Order

Less abc.txt Viewing the ABC file can be turned upside down

LS--help | More (view the file in more ways)

Cat abc.txt View ABC file

Head-5 abc.txt View Top Five Elements

Tail-5 abc.txt View Tail Five Elements

head-10/etc/passwd | Tail-4 view six to 10 rows of files

Tail-f Abc.txt Viewing files dynamically

More Abc.txt View Abc.txt Press Q to exit press ENTER to display the next line Go home page DOWN Press B to page up

Ls-l/etc/*.conf | Wc-l See how many lines are there for. conf files under Etc files

Find/etc-name *.conf-a-type F | Wc-l See how many lines are there for all files with. conf under Etc files

WC/ETC/PASSWD (display line word byte)

Wc-l etc/passwd (show lines only)

grep--color 127.0.0.1/etc/hosts (find 127) s

Grep-i--color 127.0.0.1/etc/hosts (-i means case insensitive)

Grep-iv--color line/etc/hosts (-v take reverse)

Grep-e "127.0.0.1|network"/etc/hosts--color (Extended find 127 and net)

grep "^$"/etc/hosts.allow (^$ = blank line)

Grep-v "^$"/etc/hosts.allow (except for empty lines)

grep--color ^root/etc/passwd (Find the ^ at the beginning of root to indicate what starts with what)

grep--color bash$/etc/passwd (indicates what ends with a $ in bash)

DMESG | grep ETH--color (find main information at boot time)

Grep-v ^#/etc/hosts (get rid of the message with # Open head)

Grep-c/bin/bash$/etc/passwd (count the number of users using/bin/bash as the login shell)

Special Symbol Letter Summary

(^) Start ($) End (^$) line number with blank line (-e) extension (-c)

(-D) Extract (-i) Non-size (-V) inverse (-l) Display line

PM Order

echo 11111 > Test.txt or echo 1111 >/home/test.txt (enter content before new content is deleted)

echo 11111 >> test.txt or echo 1111 >>/home/test.txt (Append new content does not delete previous content)

GZIP ABC (compressed ABC) BZIP2 compression same as Gzip method

BZIP2-D ABC (decompression) bzip2 decompression Same as Gzip method

Zip AAA ABC (intermediate ZIP name followed by file name) (source file exists)

Unzip-d CCC Aaa.zip (unzip and create folder)

TAR-CVF Abc.tar ABC (c means package V to see the process is optional F indicates an inductive document is necessary)

TAR-XF Abc.tar (x = unzip)

TAR-TF Abc.tar (t = View Compressed package file)

TAR-ZCF home.tar.gz Home (compressed folder is in gzip tar format package)

TAR-ZXF Home.tar.gz-c/Home (unzip the gzip Tar-formatted package to a path)

TAR-JCF home.tar.gz Home (compressed folder is Jzip tar format package)

TAR-JXF home.tar.gz-c/Home (unpack Jzip tar-formatted package to a path)

TAR-JTF home.tar.gz (View contents of compressed package)

(c means packing F means archive x means extracting J means bzip2 Z means gzip t means view-C indicates which path to extract to)

redhat6.4 no matter bj2 or GZ direct AXF decompression TAR-AXF xxx.tar.gz

VIM ABC (open ABC text editor)

Page PgDn PgUp (page up and down)

In-line jump (home end)

Jump cursor between rows (press 1 shift+g to jump to the first row shift+g the last row)

YY (copy one line of the cursor) p (sticky large p cursor before small p cursor)

del or x delete dd Delete one row press 2 and then press DD to delete the next two lines of the cursor

Press D and Press shift+^ (the beginning of the deletion from the cursor)

Press D and Press shift+$ (the end of the line removed from the cursor)

/word (look backwards for characters suffering from "word")

Wrod (look forward for characters suffering from "word")

N, N (jumps to the next/previous found character)

U (undo last Action)

U (undo all modifications to the current line)

J (merge current row and next row)

X (Set Password)

!ifconfig (You can add one before you exit the other command command in the editor!)

Ctrl+r (cancels the current operation)

Ctrl+zz Save and exit the Vim editor

Go to the editor W/home/abc Save as an ABC under the home folder

Enter the editor R/HOME/CAD to load the CAD under the home file into the current editor

Enter editor e/home/opt to replace the opt file under the home file with the current document open

W Save Q Quit! Force x Save plus exit

R! blkid/dev/sda1. Write uuid to file

G jumps to the last line or crtl+g

Press number N and press Crtl+g

C cursor to the end of the line is deleted and into the editing mode

M #跳到屏幕中间

Press the number key and then press the left and right healthy head #身左右跳转几个位置

0 #回到行首

X #保存退出

In the vi Editor, in command mode, type O to add a new line under the current line of the cursor

In the vi Editor, in command mode, delete the character at the current cursor using the x command.

In the vi Editor, in command mode, repeat the last action on the edited text, which you can use. Command.

Find Features

Replaces the first "old" s/old/new of the current line

Replaces all "old" s/old/new/g of the current line

Replace all "old" n,ms/old/new/g of line N-m

Replace all "old"%s/old/new/g in the file

Replace with C, each time users need to confirm%S/OLD/NEW/GC

Vim ~/.VIMRC is located in the user's home directory to pre-set some vim parameters

Set Nu Add line number set Nonu Cancel line number

Set Nohlsearch original look-up mark minus can be shortened to set HLS

Set Autoindent (start indent) can be abbreviated as set AI

3, Grep,vim, compression function detailed