If you want to add new item to the end of array without specifying an index use:
array=()array+=("first")echo ${array[@]}Output: first_item
If your array is sequential, you can use "#" to get index for new item:
array[${#array[@]}]="second_item"echo ${array[@]}Output: first_item second_item
Note "${#array[@]}" gets the length of the array.
See Also
Deleting elements from an array in PHPAdd Elements to Python Array {3 Methods}How to find the sum of an array of numbersHow to Replace Values in an Array in PowerShellAnother option is assign to the array all of its items and append the new one as in the following example:
array=(${array[@]} "third_item")echo ${array[@]}Output: first_item second_item third_item
It 's good practice to enclose array items with quotes, when they could contain white space characters.
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