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