If-elif-else Statement 在bash 脚本中,如果希望使用 if 语句应用多个条件,则使用 if elif else。在这种类型的条件语句中,如果满足第一个条件,则执行下面的代码,否则检查下一个 if 条件,如果不匹配,则执行下面的 else 语句中提到的命令。其语法和示例如下所示。 Syntax : if [ condition_command ] then comman...
Use if else statement Now I add an else statement in the previous script. This way when you get a non-zero modulus (as odd numbers are not divided by 2), it will enter the else block. #!/bin/bash read -p "Enter the number: " num mod=$(($num%2)) if [ $mod -eq 0 ]; t...
When you need to check multiple conditions in sequence, using nestedif-elsestatements can become cumbersome and difficult to read. This is where theelif(else if) statement comes in handy. Theelifstatement allows you to check multiple conditions in a more structured and readable way. The syntax ...
if-else Statement 除了普通的 if 语句之外，我们还可以用 else 块扩展 if 语句。基本思想是，如果语句...
'Else if'in bash scripting, often written as'elif', is used to check multiple conditions in your code. It is used with the syntax,if [firstStatement]; then... elif [secondCondition]; then... else. It’s a powerful tool that allows your scripts to make decisions based on various scen...
An alternative to if-else statements in shell scripting is the case statement. The case statement allows you to match a value against multiple patterns and execute different blocks of code based on the match. Here’s an example: case$varin1)echo"Variable is 1.";;2)echo"Variable is 2."...
Bash Shell Conditional Statements Conditionals let us decide whether to perform an action or not, this decision is taken by evaluating an expression. The most basic form is: if [ expression ]; then statements elif [ expression ]; then statements else statements fi ...
Actually,we can even skip theif–elsestructure, instead opting for the so-called ternary statement: [ TEST_COMMAND ] && ( THEN_EXPRESSIONS ) || ( ELSE_EXPRESSIONS ) Here, based on the result ofTEST_COMMAND, the script either executes theTHEN_EXPRESSIONSorELSE_EXPRESSIONS. ...
Introduction to Else If in PowerShell If / else conditions are the most useful conditions in a scripting language and you may want to use multiple times while writing script. If the first condition in If the statement fails then the second stage is ElseIf statement. InElseIfblock you can ...
These were just two basic examples of how conditional statements work in PowerShell. Let’s move on to the Else statement. How to use the PowerShell Else statement with the If statement In PowerShell, you can use the Else statement with the If statement to create conditional logic. It allo...