arrays in bash script code example

Example 1: bash array

# create an array - just assign first value
arrayname[0]='VALUE'

# define an array
declare -a arrayname=(element1 element2 element3)

# get array element at index 
${arrayname[2]}

# get all array elements
${arrayname[@]}

# get array length
${#arrayname[@]}

Example 2: bash script in array

if [[ " ${array[@]} " =~ " ${value} " ]]; then
    # whatever you want to do when array contains value
fi

if [[ ! " ${array[@]} " =~ " ${value} " ]]; then
    # whatever you want to do when array doesn't contain value
fi