Shell

Background:The default specified file directory for Hadoop's HDFs file system mount is/mnt/disk{n}. When operators, accidentally attached to the disk in other directories, such as/mnt/data,/mnt/disk01,/mnt/diska, HDFs will select the root partition,

Linux shell script output with color textThe color of the text terminal can be generated by using the ANSI unconventional character sequence.Example: "Echo-e \033[44;37;5m BLUE \033[0m""Echo-e \033[44;37;5m BLUE \033[0m BLACK"The area that needs to

Transferred from: http://www.linuxidc.com/Linux/2011-09/42929.htmWhen using the shell under Linux, for convenience, an array is occasionally used. The way the array is declared is: array= (element1 element2 element3 .... elementn) That

Script monitoring:The process that gets the maximum number of handles:Link Analysis:Script fragment:Case"$handle" inch2) echo"The handle of the process:"Echo" "Handle| Awk'{print $ "\ n" \ n "\ $7" \ n " $9" \ n "$11" \ n "}'>Temp forIinch' Cat temp

Before the HTML "TARGET=_BLANK>XP using the Control Panel CPL file left the back door, and then with the. cpl file Plus account technology, LCX really very powerfulToday, we studied the user Control Panel file nusrmgr.cpl, found that the call is

1,Mkdir -M, -- mode = mode set file mode (as in chmod), not a = rwx-umask -P, -- parents no error if existing, make parent directories as needed Mkdir-P dir1/dir2 // IfDir1Does not exist, also createDir1 Mkdir-M 755/usr/dir3 // and setMode 2,

EXEC command in Shell 1.-exec parameter in find In the current directory (including subdirectories), find all TXT files and find the rows containing the string "bin" Find./-name "*. txt"-exec grep "bin "{}\; Delete all TXT files in the

1. for arithmetic operations. There are several assignment methods: Let a = 1 + 2Echo $ A = $(3 + 3 ))Echo $ A = $ [4*4]Echo "$" Set $ [A = 5*5]Echo "$" 2. Determine whether a directory exists:If [-d "$ (PWD)/.../candpointer"]; thenEcho "

Learning and using bash shell shortcuts By fenng|It can be reproduced. During reprinting, it must be indicated by a hyperlink.ArticleSource and author information and copyright notice Web: http://www.dbanotes.net/techmemo/shell_shortcut.html This

13. Format and output the current running process of the specified user: In this example, we pass the user list to the script in the form of Script Parameters. After the script reads the parameters, print the process of the user in the user list in

Part 1ArticleI said that in order to change users' criticism on their console interface, Windows Vista started and planned to change this situation. The appearance of powershell. 1. compatible with shell commands To be compatible with

Control statement The following three methods are commonly used. A lower-case string represents a control command, while a lower-case string represents other meanings.1. If test then commands Elif test then commands fi2. for VAR in list do

Sometimes you can write your own gadgets and prefer non-graphic interfaces. However, some applications still bring up a reminder to let you know. Zenity is a very handsome thing. For its usage, refer to its -- help. I will not repeat it here. Here

Background:Access to Site Resources outside China is sometimes very slow. an occasional download is certainly tolerable. It is a wise decision to build an image site for multiple use or internal use by a small team.This section uses the yum source

Shell scripts can read data in the following ways:1. keyboard input, default2. Read from the file3. Pipeline Command Transmission Echo functions:\ C: Do not wrap\ F: Paper Feed\ T: Skip\ N: line feed\ Indicates escape, for example: "\"/dev/rmt0 "\"

Code 1: Copy codeThe Code is as follows :#! /Bin/bash # Network card Traffic Statistics # Link: www.jb51.net # Date: 2013/2/26 N = 10 DateRm-rf/tmp/ifconfig_logWhile ($ n> = 0 ))DoN = $ ($ n-1 ));Date>/tmp/ifconfig_logIfconfig

Monitordisk. sh: Copy codeThe Code is as follows :#! /Bin/bash # Updated: PM By: leif (liangliwen@163.com) EMAIL =/usr/local/bin/email /Bin/df-h>/tmp/df.txt USE = 'df-H | grep-o [0-9] * % | grep-o '[0-9] \ +'' For I in $ USEDoIf ($ I> 95 ))Then$

Copy codeThe Code is as follows: Filename = '/home/admin/jobs/CnClickstat/DFSLoader/loader. cfg' # Use shell strings BuName1 =1 {filename # */jobs/} # Get 'cnclickstat/DFSLoader/loader. cfg 'by removing

Don Libes, author of objective CT, made the following definition for objective CT when it was written in 1990: automated CT is a software suite for automatic interaction (Automated CT [is a] software suite for automatic interactive tools ). The

$ Cat test.txt line1line2line3line4 $ Sed-I '/line/{n; d}' test.txt $ cat test.txt line1line2line3line4 $ Sed-I '/line1/{n; d}' test.txt suzhaoqiang @ suzhaoqiang-OptiPlex-380 :~ /Android/source/linux_learned $ cat test.txt line1line2line3line4