how to write bash script

Arrays have been used before, and the following describes a practical function of their workbackground of the work that appears :The company test environment of Tomcat WebApps has 3 projects, if you press the usual release script, you need to write a single publish script for each project, I feel too much trouble, I would like to be able to use a

How to write bash Shell CGI under uhttpdcgi Target Reference WWW ROOT Dir on OpenWRT Browser Client Access TargetWant to provide the Smaple RESTful server under UHTTPD on OpenWRT, I-Select the bash script for a demoReferenceBash CGIWeb CGI with Bash

In this case, it is usually a shell script written under window and copied to the Linux machine for execution to occur.The reason is:The end of each line under Windows is \n\r, and the end of the file under Linux is \ nThis allows window to write an edited shell script when it is copied to LinuxThe end of each line will be more than one character. \ rThis \ r cha

Bash script code for obtaining computer hardware configuration information in Linux Recently, to obtain the hardware configuration information of Several Linux servers, I wrote a script code to obtain the hardware configuration information, including the number of cpu cores, memory size, and hard disk size, the Code is as follows: #! /Bin/

What is screen. GNU Screen is a free software developed by the GNU Program for command-line terminal switching. This software allows users to simultaneously connect multiple local or remote command sessions and switch between them freely. GNU screen can be viewed as a command-line interface version of the window manager. It provides a unified interface for managing multiple sessions and corresponding functionality. Why do you create screen with scripts? In order to take advantage of the s

Fun Bash Script: Special Variables 4th articles In the previous blog, I talked about the basic concepts and initialization of variables. We know that if we initialize a variable a = hello, we need to use echo $ a if we want to print its value. However, there are many special variables available for $. This article describes $0 #*@_? ! -Meanings of these special variables.Script Parameters Just as the C lang

Bash Script Programming:???? Scripting: Interpreter interpretation execution; first of all have to clear up some trivial knowledge points, I try to do what I learned to help friends comb Programming Environment: (I will be in the next chapter, graphic examples three combinations way to take everyone to study together)???????????? Process Control statements;???????????????? sequential exec

Exercise: Write a script adminuser33.shthat uses the following format:Adminuser33.sh--add-del-h|--help-v|--verboseamong them, - H option can only be used alone to display help information; --add option, a new user is added; - v option, the new user appears after the new user is displayed, and the--del option deletes the user. #!/bin/bash#Debug=0Add=0Del=0For I in

The technical skills here were initially from Google's TestingontheToilet (TOTT ). Here is a revised and expanded version. Script security all my bash scripts have the following opening remarks :#! /Bin/bashset-onounsetset-oerrexit this will avoid The technical skills here were initially from Google's "Testing on the Toilet" (TOTT ). Here is a revised and expanded version.Script security All my

Advanced Bash Script Programming Guide-general Linux technology-Linux programming and kernel information. Read the following for details. Advanced Bash Script Programming Guide Main directory Part 1. Warm up 1. Why use shell programming? 2. Start with a Sha-Bang (Sha-Bang refers #!) 2.1. Call a

The Linux script has not been written for a long time. Suddenly there is a need to write a bash shell script to initialize Oracle users and tablespaces. Make a record for future Query Call method:./user. sh oracle/u01/app/oracle/data_01.dbf/u01/app/oracle/index_01.dbf The content is as follows: #! /Bin/

In Linux Minicom is a very good use of the serial Debugging tools, manual operation is very simple, when the automated testing, there is a bit of trouble; The following is a minicom automated test, that is, a bash script operation Minicom 1 First is through the Minicom connection target serial port, Manual setup is simple, In/etc There is a minicom configuration file "MINIRC.DFL", which reads the configurat

Shell is a commonly used script for interpretation in Linux. It contains many types and is widely used in bashshell. Shell files can be seen everywhere in the android source code, for this reason, make a memo (for details, shell can be published separately), and record some common symbols and syntaxes as follows to facilitate searching 1. A simple shell script is as follows: #! /Bin/

seen on the Internet, we can use the following methods to achieve Batch Job parallelization using the Bash script. note: The process and thread are not distinguished, and parallel and concurrent tasks are not distinguished. 1. Use the GNU paralle Program Parallel is a program specially used by GNU for parallelization. It is suitable for Simple Batch Job parallelization. you do not need to

As a result of the work, write a script, the function of the script is to implement: There are two. txt files, which contain some domain names, and then from these two. txt files, randomly remove a domain name, written to the shiting.htm and xiazai.htm files inside. The script has been written, the grammar has been m

, note where the function definition plus local and no local difference#!/bin/bash#A=1Test () {Local A=$[3+4]}TestFor I in ' seq $a 10 '; DoEcho $IDone5. Command mktemp: create temporary files or directories to avoid duplication with other filenamesMktemp/tmp/file. XX (TMP directory is cleared by default for 30 days)-D: Create as DirectorySecond, signal capture1. Signal:Kill-signal PID 1:hup 2:int 9:kill 15:term2, the

Under Ubuntu I wrote a shell script with bash to grammar (exactly the script on the computer), under Ubuntu, with SH test.sh to run, but there are unexpected results, such as ECHO-E "\ntest\n" to the execution is different, Run directly with the SH test.sh, the-E (as a string) is printed, and the Echo-e "\ntest\n" is not output "-e" directly in the terminal.I was

Because just graduated from poor college students, and friends rented a server opened a number of ports to provide SS services, too lazy to configure Ss-panel, used Ss-bash to monitor the traffic of different ports, but each time to wait on the server to see traffic usage, very troublesome, so wrote a simple page to provide WEB access, specific content through this article study itBecause just graduated from poor college students, and friends rented a

Instead of bash, write PHPdaemon (background program ). LieHuo. net) a friend from Yahoo recently told me that he used to write scripts with bashcsh. now he is using PHP to write background programs. he thinks PHP has the most complete function, in addition, it is easy to use the help House (www.Bkjia.com) tutorial. Re

Original URL: http://zhu8337797.blog.163.com/blog/static/170617549201122512712136/ Command Options function BASH–X Pin Name Echo Echo Displays each row of the script after the variable is replaced and before the command is executed BASH–V Pin Name With Print the lines in the