Arrays and traversal __linux in the Linux shell

When using the shell under Linux, the array is occasionally used for convenience. The array is declared in the following way:

array= (element1 element2 element3 ... elementn)

That is, wrap the array elements of the parentheses package together, and the array elements are separated by spaces.

Read the data as follows

#echo ${array[0]} #echo ${array[index]}

The traversal of the array takes a total of: ${array[@]}, the complete example is as follows:

For data in ${array[@]} does echo ${data} done

For more details please refer to Advanced bash-scripting guide:http://www.tldp.org/ldp/abs/html/