There are the associative arrays and integer-indexed arrays. Bash arrays have numbered indexes only, but they are sparse, ie you don't have to define all the indexes. We can combine read with IFS (Internal Field Separator) to define a delimiter. As a quick example, here’s a data table representing a two-dimensional array. In BASH script it is possible to create type types of array, an indexed array or associative array. You don't need this declare -p command in your real script. Execute the script. Print all elements, each quoted separately. Since bash 4.3 it is not that easy anymore. No, you need not count them all. In Bash, there are two types of arrays. echo "${array[@]}" Print all elements as a single quoted string We can display the length of the whole array or any array element by using a special operator '#'. Arrays in Bash. When using arrays, one must know how many elements are present in the array. bash documentation: Accessing Array Elements. With "declare -n" you can add a reference to another variable and you can do this over and over again. There is no maximum limit on the size of an array, nor any requirement that members be indexed or assigned contiguously. 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. An array is a variable that can hold multiple values, where each value has a reference index known as a key. Bash Array – An array is a collection of elements. 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 . Method 3: Bash split string into array using delimiter. @nath declare -p is just a quick way to make bash print the real array (index and contents). As if this was not complicated enough, with "declare -p", you do not get the type or the original variable. Instead, bash provides a special operator who does all the work for us. 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. The Bash provides one-dimensional array variables. Since bash does not discriminate string from a number, an array can contain a mix of strings and numbers. Unlike in many other programming languages, in bash, an array is not a collection of similar elements. Bash does not support multi-dimensional arrays, but there is a way to imitate this functionality, if you absolutely have to. Example: These index numbers are always integer numbers which start at 0. 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