learn to write powershell scripts

the next line6) #被视为批注4. If you are executing with bash, you can choose Bash shell.sh or sh shell.shThe following example shows exactly what is in script:1) Since we are using bash, we have to declare the syntax of this file using bash syntax in #!/bin/bash2) All the other # are annotations3) need to declare major environment variables4) If the script name is sh01, then sh sh01.sh can execute his5. The most commonly used in C language is the choice of structure, here also, in script will also u

. version Information; 3. author and contact information; 4. file creation date; 5. history and so on. This will help rewrite and debug future programs! Announcement of major environment variables:We recommend that you configure some important environment variables. laruence believes that path and Lang (if used to output related information) are the most important! In this way, we can directly issue some external commands when this program is running, without having to

the symbol to add content to prevent omission.Pairs of symbols include: {}, [], ', ', ', ', '(2) The brackets [] must have at least 1 spaces at each end.(3) For the Process Control statements, you should write the format once, then add the content. Such as:If statement:If condition contentThenContentFiFor loop:ForDoContentDoneHint: while and until, case, and so on statements are also the same.(4) Make the code easier to read by indenting.(5) The valu

does not return a value, and then call the function#!/bin/shtest(){ aNum=3 anotherNum=5 return $(($aNum+$anotherNum))}testresult=$?echo $resultDefines a function that has a return value, invokes the function, and outputs the result11#!/bin/shtest(){ echo $1 #接收第一个参数 echo $2 #接收第二个参数 echo $3 #接收第三个参数 echo $# #接收到参数的个数 echo $* #接收到的所有参数}test aa bb ccDefines a function that requires passing parameters12 redirectsresult > file #将结果写入文件，结果不会在控制台展示，而是在文件中，覆盖写$echo result >> file #将结果写入文件

that does not return a value, and then call the function#!/bin/shtest(){ aNum=3 anotherNum=5 return $(($aNum+$anotherNum))}testresult=$?echo $resultDefines a function that has a return value, invokes the function, and outputs the result11#!/bin/shtest(){ echo $1 #接收第一个参数 echo $2 #接收第二个参数 echo $3 #接收第三个参数 echo $# #接收到参数的个数 echo $* #接收到的所有参数}test aa bb ccDefines a function that requires passing parameters12 redirects$result > file #将结果写入文件，结果不会在控制台展示，而是在文件中，覆盖写$result >> file #将结果写入文

#!/bin/shsysout(){ echo "hello world"}sysoutDefine a function that does not return a value, and then call the function#!/bin/shtest(){ aNum=3 anotherNum=5 return $(($aNum+$anotherNum))}testresult=$?echo $resultDefines a function that has a return value, invokes the function, and outputs the result11#!/bin/shtest(){ echo $1 #接收第一个参数 echo $2 #接收第二个参数 echo $3 #接收第三个参数 echo $# #接收到参数的个数 echo $* #接收到的所有参数}test aa bb ccDefines a function that requires passing parameters12 redirects$echo

In the end of the previous article, "Writing shell scripts for Linux using C #", we left a question about how C # calls Bashshell. After the article was published, I noticed that there was a reader's message recommending the use of "Pash" (something like PowerShell), and after I downloaded and installed the project, I tried to find that it was still not what we wanted. It seems that C # really does not prov

Use C # To write Shell scripts for Linux, In this age of determining the personality and the prevalence of the contempt chain, especially in our IT industry, what are the times of your contempt and contempt today? If you do not have the ability to press the box, you have to read it. Today, we also want to improve our style, learn things that are wide open in our

Reprinted from Http://blog.163.com/skynjl/blog/static/603053922009127101558356/ Today, my colleague asked me to write a shell script. Although I am deeply influenced by * nix, it is annoying to execute sh scripts that are everywhere in * nix. Why? The first reason is the inexplicable syntax of the sh script.ProgramThere is no beauty at all. Second, the processing capability of the sh script is sti

Introduction:This series of articles, composed of two parts, explores how to use python to create scripts to use KVM to manage virtual machines. In this section, you will learn how to add a GUI to expand simple state and display tools. This seriesUse python to write scripts for KVM. Part 1: libvirtlibvirtBasic knowledg

FS built-in variable BEGIN {fs= ":"}# search username Aaronkilik and output account details/aaronkilik/{print "Username:", $, "U Ser ID: ", $ $," User GID: ", $4}After saving the file, exit, make the script executable, and then execute it as follows:$ chmod +x second.awk$./second.awk/etc/passwdSample output:Username:aaronkilik User id:1000 User gid:1000In the last example below, we will use the do while statement to print the number 0-10:Here is the contents of our script file, the file name i

/] #service iptables stop//close iptables service The former opens the Iptables service, defaults to the rules in "/etc/sysconfig/iptables", the latter closes the Iptables service, and the default clears all iptables rules. Writing Firewall scripts In a production environment, I rarely write iptables rules in one piece, the most common way is to write them to a

Do web designers really want to learn to write code? The question is interesting, but it is rarely mentioned. Because in a website development, the page style design and the front End layout code (for example uses css,html) is respectively by the art and the front-end development person completes. The distinction between the two is almost never crossed in the industry. Of course, the answer to this question

How to Learn programming well-write to students at school In October, I had been busy working on a project. Every day, I was immersed in a lot of English documents. I kept experimenting and summing up, that is, I was still thinking about some solutions when I got home at night. The blog has been idle for a whole month, and the winter in Beijing has not found any mood to

()): the Print(Key,line.strip ()) - f.close () - - + - #Mode 3: File loop read. Memory is only one line at a time, read a line, close a row, memory will never explode. Recommended use 3, highest efficiency +f = open ("Test.txt","R", encoding="Utf-8") A Print("One line reads bigger looper--------------") at forLineinchF: - Print(Line.strip ()) -F.close ()4, practice topics, to achieve the Nineth line does not print two waysMode one: F = open ("Test.txt", "R", encoding= "Utf-8") prin

before all outputPrint ("content-type:text/html\n")The final code is as follows: #! C:\Python3.5.2\python.exe #-*-coding:utf-8-*- print (' content-type:text/html\n\n ') print (' print (' Print (' print (' print (' print (' print (' print (' print (' This is the completion of the basic configuration of this program, but after the configuration is complete, you can find a 500 error, Apache error log such as:Couldn ' t spawn child process:c:/apache/cgi-bin/cgi_1.pyAfter this