Execute the script. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. We can combine read with IFS (Internal Field Separator) to … Where 0 is the index of the array and 1 is the value assigned to the first element of the array. Each line should be an element of the array. We’re going to execute a command and save its multi-line output into a Bash array. In Bash, there are two types of arrays. Creating Bash Arrays # Arrays in Bash can be initialized in different ways. Now the myarray contains 3 elements so bash split string into array was successful # /tmp/split-string.sh My array: string1 string2 string3 Number of elements in the array: 3 . Print all elements, each quoted separately. At first glance, the problem looks simple. The following things need to be noted when arrays are implemented in Batch Script. An array is a variable that can hold multiple values, where each value has a reference index known as a key. Arrays in Bash. As a quick example, here’s a data table representing a two-dimensional array. These index numbers are always integer numbers which start at 0. Any variable may be used as an array; the declare builtin will explicitly declare an array. Bash does not support multidimensional arrays, and you can’t have array elements that are also arrays. allThreads = (1 2 4 8 16 32 64 128). The first thing we'll do is define an array containing the values of the --threads parameter that we want to test:. I guess I didn't test that comment before posting. In this example, all the elements are numbers, but it need not be the case—arrays in Bash can contain both numbers and strings, e.g., myArray=(1 2 "three" 4 "five") is a valid expression. There are the associative arrays and integer-indexed arrays. The Bash provides one-dimensional array variables. Arrays are indexed using integers and are zero-based. It only works with a 1-element array of an empty string, not 2 elements. By asking for indexes not in the array you either create an array with indexes missing, ie 0,1,3,6,7,9 This would then mean you have "holes" at positions - 2,4,5,8 and nothing in any index after 9 However, you create your array using the following: There is no limit on the maximum number of elements that can be stored in an array. Method 3: Bash split string into array using delimiter. echo "${array[@]}" Print all elements as a single quoted string I even checked older bash and it's still wrong there; like you say set -x shows how it expands. bash documentation: Accessing Array Elements. @Michael: Crap, you're right. Arrays are not specifically defined as a type in Batch Script but can be implemented. Syntax of if statement Bash does not support multi-dimensional arrays, but there is a way to imitate this functionality, if you absolutely have to. Elements in arrays are frequently referred to by their index number, which is the position in which they reside in the array. 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