In this example, the script checks the user’s input against three patterns: ‘apple’, ‘banana’, and ‘cherry’. If the user enters ‘banana’, the script prints ‘You entered banana’. If the user enters something other than these three fruits, the script prints ‘You did not enter ...
The script takes any temperature as an argument and then displays a message that reflects what would the weather be like. If the temperature is greater than five, then the nested (inner) if-elif statement is evaluated. Let’s do a few runs of the script to see how it works: kabary@han...
In this example, the script checks if the number is less than the threshold using the-ltoperator. Q. What are some common conditional statements frequently used in Bash scripting? Some common conditional statements frequently used in Bash scripting are: ...
Pay special attention to space. There must be space between the opening and closing brackets and the conditions. Similarly, space must be before and after the conditional operators (-le, == etc). Here's what it shows when I run the script: Did you notice that the script tells you when ...
Modifying strings with pattern matching substitution Modifying strings with tr, awk and sed 10-minute break Segment 5: Using conditional structures Length: 50 minutes Using if then else Using logical operators && and || Using while and until Using for and case. Q&A Length: 10 minutes ...
By combining AND and OR operators you can precisely control the conditions for when certain commands should be executed. 5.4.2Conditional Expressions Enabling your Bash script to make decisions is extremely useful. Conditional execution allows you to control the circumstances where certain programs are ...
A Shell script usually needs to test if a command succeeds or a condition is met. In Bash, this test can be done with a Bash if statement. As with any other programming language, Bash comes with conditional expressions that allow you to test for conditions and alter the control flow if ...
Bash Script File </> Copy #!/bin/bash num=50 if [ $((num % 2)) == 0 ] || [ $((num % 5)) == 0 ]; then echo "$num is even or divisible by 5." fi Output 50 is even or divisible by 5. Bash OR Operator in While Loop Expression ...
My First Script - WoW! Preview Accepting the input from the user Start Passing Arguments Start Functions - The Basics Start "printf" statement - Part 1 Start "printf" statement - Part 2-part2 Start Escape Character & Line Continuation Character ...
if statements in bash script use square brackets for the logical condition and also have support for else and elif (else if) branches. Bash supports standard programming language conditional operators such as equals (==), not equals (!=), less than and greater than (<, >), and a number...