![]() # now determine if it is morning or night time # if it is a weekday, echo the text below # Check if the day of the week is between 1-5 (Mon-Fri) # Determine if it is morning or night and store it in the $time variable # Determine the day of week and store it inside the $day variable But, if the first if statement is not met because it is the weekend (Sat or Sun), then the second if statement will not get executed at all. If it is, it will then check to see if it is morning or night time (AM or PM). The script below will first check to see if it is a weekday (Mon-Fri). It is normally advantageous to use a case statement rather than a bunch of nested if statements. ![]() Bash Scripting: Nested if statement exampleĬheck out the example below to see how to use nested if statements within a Bash script. Looking at the example below will help you visualize the process better. If any of this does not make sense at first, do not worry. Remember that the second if statement needs to be terminated before the first one, since it is nested.If the first expression does not match, then there is no chance of entering into the nested if statement to check for the second condition or any other subsequent conditions.But if the condition is not matched for the second if statement, only the first statement is executed and then the script escapes from the entire nested if.If it is, it proceeds with the second statement. After the first statement, the script then checks if yet another expression is true.If it is, it proceeds with the first statement. The first if statement checks if an expression is true.This is the most basic form of a nested if statement. This will familiarize you with the syntax so you can easily interpret the coming examples, and eventually write your own from scratch. $ – requires given linux commands to be executed as a regular non-privileged userįirst, let’s go over how a nested if statement is structured in a Bash script. # – requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command Privileged access to your Linux system as root or via the sudo command. Requirements, Conventions or Software Version Used How to write a nested if statement in a Bash script Software Requirements and Linux Command Line Conventions Category Real example of nested if statements to try on your own system.How to structure a nested if statement in a Bash script.Check some of the examples below to see how nested if statements work. In this tutorial, you will learn how to use nested if statements in a Bash script on a Linux system. You can make the nest as deep as you want, though it will continue to grow in complexity. In simple terms, these conditional statements define “if a condition is true, then do that, otherwise do this instead.” The if statements become more complex when you nest them together, or in other words put one if statement inside of another if statement. An if statement in a Bash script is the most basic way to use a conditional statement.
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