Your program should take two possible command line arguments. For example

$./$myls $-$a ~$/$Document$$

$2.$ The first argument is an option started with a dash $-.$ Legitimate options are $-$a$$

and $-$l$.$

$3.$ If $-$a$$ is giving, you need to list all files including hidden file start with $..$

$4.$ If $-$l$$ is giving, you need to list one file per line with detailed information $($file type,

permission, link number, user, group, size, modification time, and file name$).$ The

format should be the same as the real $$ls $-$l$.$

$5.$ If no dash option is given, you only list file names with hidden file excluded.

$6.$ The second argument is a path $($relative or absolute$)$ to a directory. If present, list

the files in the specified directory. If no second argument is given, list the files in

current directory.

$7.$ Your project submission should include the implementation files myls$.$c$,$ header file

$($optional$),$ Makefile $($optional$),$ and a README file.

$8.$ All the file names need to be listed in ascending order. You can compare the outputs

with real $$ls$.$

II$.$ Important:

$1.$ You will need to do your own research on how to use masking, getpwuid$(),$

getgrgid$(),$ ctime$()$ to decode the file type, permission, user name, group name,

modification time in the $$stat$$ structure.

$2.$ You can write your own sorting function or research on how to use qsort$().$

III. Grading Criteria:

$$ Please make sure your program compiles, otherwise your submission will not be