1. Using if-else to check whether two numbers are equal When trying to understand the working of a function like if-else in a shell script, it is good to start things simple. Here, we initialize two variables a and b, then use the if-else function to check if the two variables are...
Sometimes I want to FTP a file from one machine to another. Usually, I can do the transfer interactively, but every so often, I would like to have a shell script do the file transfer. This task has eluded me in the past, but I finally figured it out. I've not seen this particular...
How to use Linux shell script to create a command line interactive menu window interface All In One 如何使用 Linux shell script 制作一个命令行交互式菜单窗口界面 All In One Q: 如何实现一个类似raspi-config的交互式命令行菜单对话框功能 raspi-configis the Raspberry Piconfiguration tooloriginally wri...
In this article, we will take a look at how to use abreakandcontinuein bash scripts. In bash, we have three main loop constructs (for,while,until).Breakandcontinuestatements are bash builtin and used to alter the flow of your loops. This concept of break and continue are available in ...
We can use below syntax to define function: x x How to Install Kali Linux On Windows 11 Using WSL Step-by-Step function function_name { Body of function } Body of function can contain any valid command, loop constrain, other function or script. Now let us create simple function which di...
You can also use command substitution to assign value to a variable. For example, we will print today’s date through the variable TODAY as follows: $TODAY=$(date) $echo"$TODAY" Another utility of the command substitution is in shell loops to get input. Here, we will try to print all...
finally create a nice shell script to run things with fewer keystrokes. But sometimes you want to run it with different arguments, and youdefinitelydo not want to duplicate your great script. You need a way to provide and use arguments from the command line. This article covers exactly that...
We can use below syntax to define function: function function_name { Body of function } Body of function can contain any valid command, loop constrain, other function or script. Now let us create simple function which displays message on screen. ...
In this short article, you will learn how to use until loop in your shell scripts using the following examples. Create an Infinite Loop in Scripts You can create an infinite loop using afalsestatement as an expression. When you try to simulate infinite loops try to usesleepwhich will pass ...
You can use the Windows PowerShell cmdlet Test-Path to avoid unnecessary errors in your scripts caused by things not being where you expect them, or by another part of your script returning a “path” that isn’t valid.So, for example, we can test if $profile exists: Test-Path $...