Unix Homework Help

Write a script using the bash shell to find and print a long listing for all files that are over a specified size and files that were modified more than a specified number of days ago. Each section of files listed should be preceded by a heading indicating what listing follows. The usage of this script should be

Filename.bash [starting directory] [minimum filesize in KB] [age for files in days]

Note that all command-line arguments are optional. If you dont include the command-line argument, the following defaults should be used in the script:

Directory current directory

Minimum filesize 1 KB

Age for files 90 days

Requirements for the script:

Must have a usage clause

Must accept up to three arguments, but can accept zero

Must use a case statement for assigning CLAs/default values to variables

Must use the find command without the -exec or -ls options

Must use a for loop to process files returned by find