Example: Bash does not support multi-dimensional arrays, but there is a way to imitate this functionality, if you absolutely have to. 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: In BASH script it is possible to create type types of array, an indexed array or associative array. Since bash 4.3 it is not that easy anymore. You don't need this declare -p command in your real script. Bash Array – An array is a collection of elements. When using arrays, one must know how many elements are present in the array. Unlike in many other programming languages, in bash, an array is not a collection of similar elements. Method 3: Bash split string into array using delimiter. bash documentation: Accessing Array Elements. Arrays in Bash. As if this was not complicated enough, with "declare -p", you do not get the type or the original variable. We can combine read with IFS (Internal Field Separator) to define a delimiter. Since bash does not discriminate string from a number, an array can contain a mix of strings and numbers. echo "${array[@]}" Print all elements as a single quoted string Arrays are indexed using integers and are zero-based. Any variable may be used as an array; the declare builtin will explicitly declare an array. 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 . An array is a variable that can hold multiple values, where each value has a reference index known as a key. @nath declare -p is just a quick way to make bash print the real array (index and contents). This is a pretty common problem in bash, to reference array within arrays for which you need to create name-references with declare -n.The name following the -n will act as a nameref to the value assigned (after =).Now we treat this variable with nameref attribute to expand as if it were an array and do a full proper quoted array expansion as before. Elements in arrays are frequently referred to by their index number, which is the position in which they reside in the array. These index numbers are always integer numbers which start at 0. Execute the script. Print all elements, each quoted separately. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. In Bash, there are two types of arrays. The Bash provides one-dimensional array variables. No, you need not count them all. As a quick example, here’s a data table representing a two-dimensional array. 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