Accumulate Linux common commands Daquan _linux shell

I have a limited memory, the usual Linux encountered in the project to share the common commands to everyone.

Linux Common commands complete http://www.jb51.net/linux/

^m exists in Linux files
The use of shell command TR can be achieved by removing the following specific commands:

Copy Code code as follows:

Cat-v Yourfile | tr-d "^m" > TargetFile

Select a word in vim

After ESC, use W or WI or Vwi to select a word

Move the cursor quickly in the console
1. Delete
1.1 Ctrl + D deletes the characters at the cursor position equivalent to VIM x or DL
1.2 Ctrl + H deletes the character before the cursor position is equivalent to vim HX or DH
1.3 Ctrl + K Delete all characters behind the cursor equivalent to VIM d,shift+$
1.4 Ctrl + U delete all characters in front of the cursor equivalent to VIM d,shift+^
1.5 Ctrl + W DELETE cursor before a word equivalent to VIM in db
1.6 Ctrl + Y restores characters that were deleted when Ctrl+u last executed
1.7 Ctrl +? Undo previous input
1.8 ALT + R undo Previous action
1.9 Alt + D deletes the post word at the cursor location
2. Mobile
2.1 Ctrl + A moves the cursor to the beginning of the command line equivalent to Vim shift+^
2.2 Ctrl + E moves the cursor to the end of the command line equivalent to Vim shift+$
2.3 Ctrl + F cursor Move backward one character equivalent to Vim L
2.4 Ctrl + B cursor move forward one character equivalent to Vim H
2.5 Ctrl + ARROW key left mouse cursor move to the beginning of the previous word
2.6 Ctrl + ARROW key right mouse cursor move to end of last word
2.7 Ctrl + X jumps between the last character of the cursor and the character at the current cursor
2.8 in Vim in the command input mode, input GG, you can quickly jump to the beginning of the file
2.9 in vim in the command input mode, input GG, you can quickly jump to the end of the file
3.0 returns the position of the previous edit in Vim, using ctrl+o in the input command mode
3.1 Returns the next edit position in Vim, using ctrl+i in the input command mode
3. Statistics
3.1 For example, in Vim to count the number of a string, you can use the command

Copy Code code as follows:

:%S/NAME//GN

Prevent being deleted by a file
1. Use a shell command to prevent files under files from being deleted

sudo chattr +a Downloads
cd Downloads
rm ngix.pdf

mv:cannot move ' ngix.pdf ' to '/home/gpx/.trash/ngix.pdf ': Operation not permitted
sudo rm ngix.pdf
rm:cannot Remove ' ngix.pdf ': Operation not permitted

2. Use the alias command to remove RM

Alias rm= ' rm-i '
or
alias Rm=trash
Trash ()
{
 mv "$@" trash/
}
or
alias rm= ' CP $@ ~/backup; RM $@ '

Data synchronization commands

#!/bin/sh 
date-d ' Now ' >/mnt/hd/data/log/rsync.log 
index=1 while
: do RSYNC-AZVH-
 - Compress-level=0--progress gpx@ip:/mnt/hd/data/priceadj_data//mnt/hd/data/priceadj_data/>>/mnt/hd/data/ Log/rsync.log

 if [$-ne 0];then Sleep
 5m
 else break
 fi
 let

 "index++"
 if [$index-eq 5] ; then
 curl-d "operator=alert&phone=number&msg=rsync-dell-data-failed" "Http://ip:port/sendmessage"
 echo "rsync data Failed!" >>/mnt/hd/data/log/rsync.log
 exit 1
 fi
did

date-d ' now ' & Gt /mnt/hd/data/log/log_save_datedata.log 
nohup python/mnt/hd/data/code/load_today_data.py >>/mnt/hd/ Data/log/log_save_datedata.log

Remove duplicate rows from files in Linux

Copy Code code as follows:

Sort-n Yourfile | Uniq > Save_path

Update Linux system time

Copy Code code as follows:

sudo ntpdate cn.pool.ntp.org

An NTP server in the Asian region

Copy Code code as follows:

. Bangladesh-bd.pool.ntp.org. China-cn.pool.ntp.org. The kong-hk.pool.ntp.org. India-in.pool.ntp.org. Indonesia-id.pool.ntp.org. Iran-ir.pool.ntp.org. Israel-il.pool.ntp.org. Japan-jp.pool.ntp.org. Korea-kr.pool.ntp.org. Malaysia-my.pool.ntp.org. Philippines-ph.pool.ntp.org. Singapore-sg.pool.ntp.org. Taiwan-tw.pool.ntp.org. Thailand-th.pool.ntp.org. Turkey-tr.pool.ntp.org. United Arab emirates-ae.pool.ntp.org

Complete word matching in vim

Using command line Input mode

/\< here, enter the words you want to match \>

If you are using to find and match in a single file

Use directly in command input mode for a word

Data transmission and Backup in intranet using SCP and Rsync

Copy Code code as follows:

RSYNC-AZVH--delete--compress-level=0--progress username@hostname (IP): File_path save_path >> Log_path

Parameter explanation:

-V:--verbose increase verbosity--info=flags fine-grained informational verbosity =flags fine-grained debug verbosity--msgs2stderr special output handling for DEBUGGING-A:--archive archive mode; Equals-rlptgod (no-h,-a,-x)--no-option turn off a implied OPTION (e.g.--no-d)-Z:--compress compress file Data duri ng the transfer--compress-level=num explicitly set compression level--skip-compress=list skip compressing files with Suf Fix in List-h:--human-readable output numbers in a human-readable format--progress show progress during transfer--dele  Te delete extraneous files from Dest dirs SCP mode remote_username@remote_hostname (or IP): Remote_file_path dest_file_path >> run_log_path example:name@host:/mnt/hd/data/code/shell$ SCP sql_rsync.sh name@host:/tmp/name@host ' s password:sql_rsync.sh 100% 149 0.2kb/s 00:00 name@host:/mnt/hd/data/code/shell$  Next, we summarize 10 common Linux commands  

1. "Empty the original file and write the contents to the file," "Put the content to the end of the file

Copy Code code as follows:

echo "AA" "Test.txt and Echo" BB "test.txt

2 Add Write permissions to group users and other users

Copy Code code as follows:

chmod go+w-r/home/zhangy

3. List archived Content

Copy Code code as follows:

TAR-TZVF test.tar.gz

　

4. View file list size

Copy Code code as follows:

Du-ah

5. View the total size of all files

Copy Code code as follows:

Du-sh

6. Mathematical operation

Copy Code code as follows:

Echo ' 1+2 ' |bc-l

7.//View some information about Linux kernel and so on

Copy Code code as follows:

Uname-a

8. Show progress on bad track scan

Copy Code code as follows:

Badblocks-s/DEV/SDA

9. View the running time of the command

Copy Code code as follows:

Time command

10. Sort by time in reverse order

Copy Code code as follows:

Ls-lrt

The above is Linux commonly used commands, I hope you like.