Shell

Suppose there is a variable var=http://www.google.com/test.htmA # Intercept, delete the left character, and leave the right character.Echo ${var#*//}where Var is the variable name and the # is an operator, *//indicates that the first//number and all

Combat one: File a006 take out the numbers insideTl_fmt_chg_shm_key=7100;export Tl_fmt_chg_shm_keyTl_msq_shm_key=7200;export Tl_msq_shm_keyTl_txn_srv_shm_key=7300;export Tl_txn_srv_shm_keySed methodSed ' s/\ (. *\) =\ (. *\); \ (. *\)/\2/' a006710072

Backup of FTPPurpose : through Shell to upload the backed-up data to another server. FTP back up the server. Simulation Tomcat for production data. 650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/7D/BB/wKioL1bvOoaiyYeLAAAjXEUp800094.png "

Tag:shell    binding    ip/mac   arp spoofing    arp virus      #!/bin/bash#function:count the relationship between IP and Mac in a C subnet#created by Comk at Mar.12.2016quitscript () { echo "User Interrupt, Quit ..."} Trap ' quitscript;  Exit 5 '

#!/bin/bash #使用哪个shell执行echo "Hello World" username= "Tom" echo $username #chmod +x./test.sh settings can perform file #for loop output for skill in Ada coffe Action Java; Do echo "I am good at ${skill}script" Done#for file in ' ls/etc '; Do#echo

In the process of learning Linux BASH Shell programming, it is found that many things are easy to forget because they are not used very often, so write an article to recordLS Displays the files under the current path, commonly used have-l show long

Six, shell script programming details of the above five parts of the content, in series to increase the understanding of the Shell 01.shell script shell:# #perl #python#php#jsp different scripts to execute different text, the role of execution is

About the shell for the use of a lot of usage, has been trying to summarize, today on the Internet to see a summary of the use of the loop, feel very comprehensive, so turn around research, hey ...1, for ((i=1;i2. Common in Shell is for I in $ (seq 1

/******************************************************************** * Shell Global and local variables * declaration: * To So far, when writing shell scripts, often by the shell function in the variable * scope confused, so today deliberately

Http://www.runoob.com/linux/linux-shell.htmlShell Pass ParametersIn addition, there are several special characters for handling parameters: parameter Handling Description $# The number of arguments passed to

The shell is an interactive command interpreter. The shell is independent of the operating system, which gives the user the flexibility to choose the right shell for them. The shell lets you type commands at the command line, which is interpreted by

Key Points:shell types, echo,$, basic syntax, Ls,man,su,sudo,grep,ps,clear,cp,rm,cat,moreReference: http://www.jb51.net/LINUXjishu/45329.htmlThere are many types of shells, such as the Csh,bourne Shell,korn shell. In most Linux distributions today,

This is an old-fashioned exercise, shell script to practice a lot, want to practice shift calculation, there is the following script.#!/bin/bashippattern= "(\\.) {3}\ "maskpattern=" [1-9]| [12] [0-9]|3[01] "while :d o  echo -e -n "

What is the shell? Believe that as long as touch the computer, for the operating system (whether Linux, Unix or Windows) a little concept of friends have heard the term, because as long as there is an operating system, it is inseparable from the

First, what is the bean Shell BeanShell is a scripting language that conforms fully to the Java syntax specification and has its own syntax and methods. BeanShell is a loosely typed scripting language (this is similar to JS);

SED: Data Flow EditorReads a row into the memory processing row and then outputs a row.Mode space:SED: Do not edit source files by defaultsed [option] Addresscommand file1, start line, end linesed startline,endline file sed 2,5p file2. Pattern

Shell programming variables a bash variable and variable classificationBash is a standard shell in Linux, so it's often called bash as a shell.1. Variable naming rules Variable names can consist of letters, numbers, underscores, but must

Before I made a sentence in the Forum Hack tool.Therefore, the decision is based on the change, in line with the use of some people.The previous version only supports https/aspx, this time after the improvement, it is also the last

Intra-enterprise network segment detects how many hosts are alivePreface: This script originally came from watching the network class Gou Qi 650) this.width=650; "src=" Http://img.baidu.com/hi/jx2/j_0058.gif "alt=" J_0058.gif "/> The space release

The main purpose of HDFS design is to handle massive amounts of data, which means that it can store a large number of files (terabytes of files). HDFs divides these files and stores them on different Datanode, and HDFs provides two kinds of data