The keyword “fi” indicates the end of the inner if statement and all if statement should end with the keyword “fi”. An if/else statement. Like in any other programming language, if, if..else, if..elif..else and nested if statements in Bash can be used to execute code based on a certain condition. Eg. In if-else statements, the execution of a block of statement is decided based on the result of the if condition.. Bash If-Else Statement Syntax If elif if ladder appears like a conditional ladder. You saw in the above example, no action is performed or any statement displayed when the condition was false. Also, note that the else block is optional. if statements also come with additional keywords, else and elif, which give you even more control over how your program executes. If the number is even, the remainder is zero when the number is divided by two. For example, if the file exists to do this if not do another thing like logic operations. In this example, the variable count specifies a condition that is used as part of the if statement.Before the if statement is executed, the variable count is assigned the value 5.The if statement then checks whether the value of count is 5.If that is the case, the statement between the keywords then and fi are executed.Otherwise, any statements following the if statement are executed. Bash Case Statement with Examples. Only if a user-entered value is greater than 10 then print “OK”. if TEST-COMMAND then STATEMENTS else STATEMENTS fi. Conditionals provide a decision point for the application flow. If the expression evaluates to true, statements of if block are executed. Let’s add an elif clause to the previous script: if returns no… Whenever you run a command, it returns exit status code. basically, there are 4 types of if statements. Bash else-if statement is used for multiple conditions. Following is the syntax of Else If statement in Bash Shell Scripting. This can be further enhanced to use if..elif..else and nested if so we will cover all such possible scenarios in this tutorial guide. Many times, you need to execute a certain set of commands based on condition and skip others under different conditions. The if...else block ends with a fistatement. Using else if statement in bash You can use an elif (else-if) statement whenever you want to test more than one expression (condition) at the same time. Bash if..else Statement May 28, 2019. In addition to else-if, we can check for new conditions, if the program goes to else block. Once a condition returns True the remaining conditions are not performed and program control moves to the end of the if statements. If you are just starting to explore the Bash coding language, you will soon find yourself wanting to create conditional statements. Sometimes, we want to process a specific set of statements if a condition is true, and another set of statements if it is false. When writing an IF statement execute statements whether the test results true or false, you use the else operator. elif (else if) is used for multiple if conditions. In programming, conditions are crucial : they are used to assert whether some conditions are true or not.. If none of the expressions evaluate to true, the block of statements inside else block is executed. For example, input the marks of student and check if marks are greater or equal to 80 then print “Very Good”. In the case of the first 'if statement', if a condition goes false, then the second 'if condition' is checked. An expression is associated with the if statement. That was a simple if-else statement in Bash. Moreover, the decision making statement is evaluating an expression and decide whether to perform an action or not. In Bash else-if, there can be multiple elif blocks with a boolean expression for each of them. To perform such type … Copyright © 2013-2019 TecAdmin.net. 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