For this assignment you will use awk to create a program for summarizing and printing information

based on the directory listing data of files and information.

You are not to use any other programs, utilities, or scripting languages not covered in class, unless

otherwise specifically and explicitly stated in this document.

Your program should take the output from the modified ls command line seen below, and process the

data in order to output the aggregate information:

ls $-$ la $--$ time $-$ style $=\text{'}+\%$ Y $-\%$ m $-\%$ d $\%$ H :$\%$ M :$\%$ S $\text{'}$

In fact, to avoid human error and ensure you are always using the correct command line, I suggest

creating and adding a new alias to your bash resource configuration file:

alias lsa $="\backslash$ ls $-$ la $--$ time $-$ style $=\text{'}+\%$ Y $-\%$ m $-\%$ d $\%$ H :$\%$ M :$\%$ S $\text{'}"$

The aggregated information processed from the directory listing data should consist of the following $($see example later for proper output formatting$)$:

$$ Per$-$user grouping of file$-$related counts found in specified directories

$$ Username of the entity owning these files

$$ Total number of files found owned by this user, printing two values: all files versus hidden

files

$$ Total number of directories found that are owned by this user

$$ Total number of $$other$$ files found that are owned by this user

$$ Total file storage $($in bytes$)$ occupied by the user$$s regular files.

$$ Itemization of the oldest and newest regular files found $($if no regular files exist in the listing,

simply report "None" for these items. If only one regular file exists, it is reasonable to report this

file as both the oldest and newest.$)$

otal file$-$related counts found in the specified directories

$$ Total users owning files within these paths

$$ Total number of files found, printing two values: all files versus hidden files

$$ Total number of directories found

$$ Total number of $$other$$ files found

$($these items include, but are not limited to$,$ symbolic links, FIFO$$s$,$ character or block devices,

etc. Basically, anything that is not a regular file nor a directory will fall under this category$)$

$$ Total file storage $($in bytes$)$ occupied by all regular files listed.

Note: again, do not use sed $,$ Python, or any other languages or utilities not explicitly allowed by this

assignment.

Note $2$: ensure to test the processing of ls listings for multiple directories, rather than just one. Such

listings can be generated by passing more than one directory to ls and$/$or by the simple addition of the

$-$R recursive option to the custom ls command shown previously. Two examples of such command lines

can be seen here:

ls $-$ la $--$ time $-$ style $=\text{'}+\%$ Y $-\%$ m $-\%$ d $\%$ H :$\%$ M :$\%$ S $\text{'}$ dir$1$ dir$2$ dir$3$

ls $-$ laR $--$ time $-$ style $=\text{'}+\%$ Y $-\%$ m $-\%$ d $\%$ H :$\%$ M :$\%$ S $\text{'}$ dir$1$

or if you have defined the aforementioned alias, equivalently:

lsa dir$1$ dir$2$ dir$3$ file$1$ dir$4$

lsa $-$r dir$1$ file$1$ dir$2$

Script Execution

Your program should each be invoked through a single bash file $($see below$)$ with input taken from stdin.

The resulting output should be printed directly to stdout

Your submission should consist of exactly two files:

$$ assign$3.$bash $-$ a bash script used as the driver program for your awk script

$$ assign$3.$awk $-$ the awk program used in assign$3.$bash