Update Element of an Array at Specific Index in Bash

Update Element of an Array

To update element of an array in Bash, access the element using array variable and index, and assign a new value to this element using assignment operator.

Syntax

The syntax to update or assign a new value to an element in array at specific index is

arrayname[index]=new_value

Example

In the following script, we take an array arr with three elements and update the element with index=1.

Example.sh

arr=("apple" "banana" "cherry")
arr[1]="mango"
echo ${arr[@]}

Output

apple mango cherry

Conclusion

In this Bash Tutorial, we have learnt how to update or set a new value for element of an array at specific index in Bash shell, with examples.