3.3. (Script 3) You are supposed to write a shell script that will count the number of files stored in the directory given as the script execution parameter. For the test purposes a test environment has been prepared in the scriptcheck system with a number of files. You must use loop instruction. Your script will be executed in the command line as:

scriptname dir_name

Suppose youve got the following directory structure:

A-

-a.txt (size 5 bytes)

-b.txt (size 7 bytes)

-c.txt (size 1 byte)

-d.txt (size 4 bytes)

For the example execution:

scriptname ./A

your script should return 4.