Bash Scripting - Arrays
In bash scripting, which expression correctly gives the number of elements in an array named
my_array?In bash scripting, which expression correctly gives the number of elements in an array named my_array?
easy🧠 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand array length syntax
In bash,${#array[@]}returns the count of elements in the array.Step 2: Differentiate from other forms
${#array}returns the length of the first element, not the number of elements.Final Answer:
${#my_array[@]} -> Option AQuick Check:
Array length = ${#my_array[@]} [OK]
Quick Trick: Use ${#array[@]} to get array size, not ${#array} [OK]
Common Mistakes:
MISTAKES- Using ${#array} which gives length of first element
- Using ${array[@]} which expands elements, not count
- Confusing ${array} with array length
Master "Arrays" in Bash Scripting
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