JS Classes Class Intro Class Inheritance Class Static JS Functions Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Bind Function Closures JS Objects Object Definitions Object Properties Object Methods Object Display Object Accessors Object Constructors Object Prototypes Object Iterables Object Sets Object Maps Object Reference This takes us to the end of this tutorial I hope you enjoyed it! If you want something more complicated and real-world example, checkout how to split strings in bash using arrays.Īnd, of course, you may practice what you just learned by solving the problems and referring to their solutions if you get stuck or need a hint.JS Tutorial JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Let JS Const JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Events JS Strings JS String Methods JS String Search JS String Templates JS Numbers JS BigInt JS Number Methods JS Number Properties JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Array Const JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS If Else JS Switch JS Loop For JS Loop For In JS Loop For Of JS Loop While JS Break JS Iterables JS Sets JS Maps JS Typeof JS Type Conversion JS Bitwise JS RegExp JS Precedence JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Arrow Function JS Classes JS Modules JS JSON JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words ![]() So, it’s totally ok to store different data types in the same array. Notice the user array contains four elements: User=("john" 122 "sudo,developers" "bash") ![]() Take a look at the following user.sh bash script: #!/bin/bash ![]() In bash, unlike many other programming languages, you can create an array that contains different data types. You can also delete the whole num array in the same way: unset num Creating hybrid arrays with different data types The first element of an array starts at index 0 and so to access the nth element of the array you use the n -1 index.įor example, to print the value of the 2 nd element of your files array, you can use the following echo statement: echo $Īs you can see, the third element of the array num has been deleted. So now you can create an array named files that stores all the five filenames you have used in the timestamp.sh script as follows: files=("f1.txt" "f2.txt" "f3.txt" "f4.txt" "f5.txt")Īs you can see, this is much cleaner and more efficient as you have replaced five variables with just one array! Accessing array elements in bash Now, instead of using five variables to store the value of the five filenames, you create an array that holds all the filenames, here is the general syntax of an array in bash: array_name=(value1 value2 value3 … ) ![]() Let’s say you want to create a bash script timestamp.sh that updates the timestamp of five different files.įirst, use the naïve approach of using five different variables: #!/bin/bash Creating your first array in a bash script Luckily, you don’t need to because arrays offer a much better solution. So far, you have used a limited number of variables in your bash script, you have created a few variables to hold one or two filenames and usernames.īut what if you need more than a few variables in your bash scripts let’s say you want to create a bash script that reads a hundred different inputs from a user, are you going to create 100 variables?
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