Bash supports if-else statements so that you can use logical reasoning in your shell scripts. The generic if-else syntax is like this: if [ expression ]; then ## execute this block if condition is true else go to next elif [ expression ]; then ## execute this block if condition is t...
General Syntax of Bash IF ELIF ELSE Below is the general syntax ofIFELIFandELSEin bash: ifCONDITION-TO-TEST;then CODE-TO-EXECUTE-1 elifNEXT-CONDITION-TO-TEST;then CODE-TO-EXECUTE-2 elifNEXT-CONDITION-TO-TEST;then CODE-TO-EXECUTE-2 ...
Example:if...elseStatement inBash echo-n"Enter numnber : "readn rem=$(($n%2))if[$rem-eq 0]thenecho"$nis even number"elseecho"$nis odd number"fi Output: Enter numnber : 54 is odd number It accepts a number from the user and gives output depending on whether the input number is...
if [ condition ]; then if true, execute this block 120 < $1 && echo "$1 is less than 150"fi if-else 语句则允许根据条件执行不同的代码块：Syntax:if [ condition ]; then if true, execute this block else if condition is false, execute this block fi 更复杂的 if-elif-else...
/bin/bash if [ $(whoami) = 'root' ]; then echo "You are root" fi Thewhoamicommand outputs the username. From thebash variables tutorial, you know that$(command)syntax is used forcommand substitutionand it gives you the output of the command....
'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...
As we know, the general syntax for theif ... elsein Bash is: if[YOUR_CONDITION_HERE]then// Block of code when the condition matcheselse// Default block of codefi Now before we go to the single-line format of anif ... elsestatement, we need to understand the multiline format of ...
if-else Statement If-elif-else Statement Nested if Statement Case Statement If Statement Syntax: if [ condition_command ] then command1 command2 …….. last_command fi Bash provides logical operators to combine multiple conditions in if statements. The common logical operators are: ...
Studying this subject further is easy with help from our engaging lesson called If, Else & If-Else Statements in Bash. After reviewing this chapter, you should be able to: Explain what an if statement asks Detail an elif statment Outline the syntax of an else statement Practice Exams ...
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 :