Bash shell case statement is similar to switch statement in C. It can be used to test simple values like integers and characters. Case statement is not a loop, it doesn’t execute a block of code for n number of times. Instead, bash shell checks the condition, and controls the flow of...
Similar to the else clause in the if statement, in case statement there is a default pattern calledasterisks(*) which will run its block of code if none of the patterns are matched. Example 1 - Calculator using case statement In this example, I have created a simple calculator using a ca...
Bash Case Statement Updated on Mar 18, 2024• 3 min read Contents case Statement Syntax Case Statement Example Conclusion Share: The bash case statement is generally used to simplify complex conditionals when there are multiple different choices. Using the case statement instead of nested if ...
The following article describes the basic syntax and includes a simple example of the BASHCASEstatement usage. TheCASEstatement is the simplest form of theIF-THEN-ELSEstatement in BASH. You may use theCASEstatement if you need theIF-THEN-ELSEstatement with manyELIFelements. With the BASHCASEstat...
If you want to understand how to use the case statement, you need to understand the syntax. It looks like this: case$variablein pattern1) commands ;; pattern2) commands ;; patternN) commands ;; *) commands ;; esac Let’s break it down: ...
当您在shell中有多个不同的选择时,Bash case语句可用于简化复杂的条件。使用case语句而不是嵌套的if语句将让您使bash脚本更易读,更易于维护。 Bash case语句与Javascript或C switch语句具有类似的概念。主要区别在于,与C switch语句不同,Bash case语句一旦找到一个并执行与该模式关联的语句,就不会继续搜索模式匹配。
In this example, the script first checks if ‘a’ is greater than ‘b’. If it’s not, it moves on to the ‘elif’ statement to check if ‘a’ is greater than ‘c’. If neither condition is met, it executes the ‘else’ statement, which in this case, prints ‘a is not greate...
到目前为止,您应该很好地理解如何编写bash case语句。它们通常用于从命令行将参数传递给shell脚本。例如,init脚本使用case语句来启动,停止或重新启动服务。 如果您有任何问题或反馈,请随时发表评论。 如果你喜欢我们的内容可以选择在下方二维码中捐赠我们,或者点击广告予以支持,感谢你的支持 ...
statement3 . fi fi If statement and else statement could be nested in bash. The keyword “fi” indicates the end of the inner if statement and all if statement should end with the keyword “fi”. The “if then elif then else fi” example mentioned in above can be converted to the nes...
Example-1: simple case statement A single conditional expression is used in bash case command to generate the output based on the matching condition. Create a bash file namedcase1.shwith the following bash script. The script will take a string value and match the value with each expression. ...