See attachment for assignment detailsAssignment 3: awk CS3423 - Systems Programming Sam Silvestro...

Question

See attachment for assignment detailsAssignment 3: awk CS3423 - Systems Programming Sam Silvestro Document version v1.0.0 Introduction 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='+%Y/%m/%d %H:%M:%S' 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="\ls -la --time -style ='+%Y/%m/%d %H:%M:%S'" Note that the inclusion of the leading backslash ensures no other previously-defined/existing ls aliases are used; certain other options such as -h could cause your script to fail, for example. Aggregated information requirements The aggregated information processed from the directory listing data should consist of each of the following, when applicable, in the order specified below (see the input/output example further below for an example of proper output formatting): • Per-user grouping of file-related counts found in specified directories – Username of the entity owning these files – Total number of directories found that are owned by this user – Total number of files found owned by this user, printing three values: ∗ All files ∗ Hidden files ∗ “Other” files found that are owned by this user (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 this 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.) Assignment 3: awk Page 1 of ?? Also note, if multiple files share the same oldest or newest time stamps, you can break the tie however you wish; there are no guidelines you must adhere to while doing so. • Total 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='+%Y/%m/%d %H:%M:%S' dir1 dir2 dir3 ls -laR --time -style='+%Y/%m/%d %H:%M:%S' dir1 or if you have defined the aforementioned alias, equivalently: lsa dir1 dir2 dir3 file1 dir4 lsa -R dir1 file1 dir2 Note that these commands can also include filenames alongside the directory names on the command line as well; this is perfectly permissible and should be accounted for, hence why it was shown in the example above. Example The example execution provided below is an excerpt from the following command, executed using the provided example input file: ssilvestro@fox05: /courses/cs/3423/Summer20/assign3$ ./assign3.bash

Pranav · Accepted Answer

assign3.bash.txt
alias lsa="\ls -la --time-style='+%Y/%m/%d %H:%M:%S'"
lsa
alias lsr="\ls -laR --time-style='+%Y/%m/%d %H:%M:%S'"
lsr
awk -F: '{print $0}' /etc/passwd
mkdir -p Directories/Vodafone
cd Directories/
mkdir AIRTEL AT_T MTN OPTUS ZAFMN
lsr OPTUS Vodafone ZAFMN
lsr OPTUS Vodafone ZAFMN
ls -laR
ls -l | wc -l
ls -ad .* | wc -l
ls -ad .*
cd 
for USER in John Clark Luci Toyks; do useradd $USER; echo friends | passwd --stdin $USER; done
cut -d: -f1 /etc/passwd | sort -k 1,1
for i in `cut -d: -f1 /etc/passwd | sort -k 1,1`
do
 
echo "Username: ${i}"
echo "Files:"
all_obj="89"
hidden_file="6"
Folders="72"
space="28998434 bytes"
echo "All: ${all_obj}"
echo "Hidden: ${hidden_file}"
echo "Directories: ${Folders}"
echo "Storage : ${space} "
done
du -smh
df -HT
user
Assignment.docx
Assignment
ls -la --time-style='+%Y/%m/%d %H:%M:%S'
Output: 
Username of the entity owning these ﬁles
Output: 
Total number of directories found that are owned by this user
Output: 
Total number of ﬁles found owned by this user, printing three values:
Output: 
“Other” ﬁles found that are owned by this user (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)
Output: 
Old to New
New to old
Total ﬁle storage (in bytes) occupied by all regular ﬁles listed
Output:
Head -30 
Output:
ls -la --time-style='+%Y/%m/%d %H:%M:%S' dir1 dir2 dir3 
ls -laR --time-style='+%Y/%m/%d %H:%M:%S' dir1
Output: 
Lsa Example:
Size of files and Directories
Output:
Note: All Command are written in bash shell and output are present in input.txt
To run bash shell change permission
Cmd: chmod 777 assign3.bash
Cmd : ./assign3.bash
input.txt
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin
operator:x:11:0:operator:/root:/sbin/nologin
games:x:12:100:games:/usr/games:/sbin/nologin
gopher:x:13:30:gopher:/var/gopher:/sbin/nologin
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
nobody:x:99:99:Nobody:/:/sbin/nologin
dbus:x:81:81:System message bus:/:/sbin/nologin
usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin
vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin
rtkit:x:499:497:RealtimeKit:/proc:/sbin/nologin
avahi-autoipd:x:170:170:

Assignment 3: awk CS3423 - Systems Programming Sam Silvestro Document version v1.0.0 Introduction For this assignment you will use awk to create a program for summarizing and printing information...

Answer To: Assignment 3: awk CS3423 - Systems Programming Sam Silvestro Document version v1.0.0 Introduction...

Answer To This Question Is Available To Download

Related Questions & Answers

Submit New Assignment