Knowing how conditionals work in bash open up a world of scripting possibilities. We’ll learn the basic syntax, including if, else, and elif. Then we'll look at a few of the "primary" operators you can leverage in a conditional statement such as = for string equality, -eq for numeric...
Introduction to command shell scripting Conditionals Conditional statementsallow us to change the way our program behaves based on the input it receives, the contents of variables, or any of a number of other factors. The most common and useful conditional for us to use in bash is theifstatemen...
If you are from a programming or scripting background then you should be familiar with the concept called"conditional statements". The conditional statements allow you to execute the code based on the result of the condition. Similarly inansible, you can use the"when conditional statements"to exe...
So far, we have presented a Boolean option for conditional statements, with eachifstatement evaluating to either true or false. In many cases, we will want a program that evaluates more than two possible outcomes. For this, we will use anelse ifstatement, which is written in Python aselif....
If /else functionality in PowerShell Writing multiple if statements are not a good idea if the condition is already satisfied. So that we can use else statement if there is the only single condition to check. Syntax if (condition1) {"Execution Statement1"} ...
This section provides a JavaScript tutorial example showing different types of 'if' statements.© 2025 Dr. Herong Yang. All rights reserved.To help you understand how "if" statements work, I wrote the following the JavaScript tutorial example, If_Statements.html: <!-- If_Statements.html Cop...
Until() Now we add the conditionalIFstatements: $i = 0 Do { IF(){} IF(){} } Until() Next we add our operating system identifiers by using the WMI object we have already been using: $i = 0 Do { IF((Get-WmiObject Win32_OperatingSystem).version -like “5*”){} ...
If Number.Text <> "" Then checks whether a value has been entered into the textbox (it is not equal to empty, or null) and if this condition is true, then the enclosed statements are executed. The enclosed statements form a second If test and in this case the value entered in the ...
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The previous section introduced the concept that there are several reserved words and a number of characters that have an effect on the operation of Bash. The most basic, and probably most widely used conditional logic is with if and else statements. Let's use an example code snippet:...