Q-1. One of your users has created a file called tmp (the command cat /etc/passwd > -tmp will do it). They want to delete it but can’t. Why might the user have difficulty removing this file? How would you remove it? You may have to refer to the online help section man pages to find the answer.

Q-2. What commands would you use to do the following:
a) View mkdir(2)
b) Find the command toprint a file
c) Find out how many different manual pages exist for mkdir
d) Describe the contents of section 8 of the manual pages

Q-3. The following examples all work with the /etc/passwd file. /etc/passwd is the file that stores information about all the users of a UNIX machine. It is a text file with each line divided into seven fields. Each field is separated by a : character. Use the cat command to view the contents of the file.
a) sort /etc/passwd
sort in order based on the whole line
b) sort -r /etc/passwd
reverse the order of the sort
c) sort +2n -t: /etc/passwd
sort on third field,where field delimiter is: (skip the first two fields)

Q - 4. What command would you use to (assume you start from the original file for every question):
a) sort the file on the names
b) sort the file in descending order on phone number
c) display just the addresses
d) change all the! characters to:
e) display the first line from the file
f) display the line containing david’s information
g) What effect would the following command have paste-d: -s phone.book

Q-5. A University student database system must produce a number of files containing information about students in a class. One such example CSV file with 6 fields has the format: student number, surname, firstname, grade(F,P,C,D,HD), mark, degree code You may seek help from: http://infocom.cqu.edu.au/85321/Reso.../6/results.csv Using previous descriptions in the lecture, this text book and the Linux manual pages, come up with commands toper form the following tasks on this example file:
a) count the number of students in the class (hint: there is one student per line in the file)
b) display the data file one line at a time
c) get a list of all the student numbers in the class
d) Find all students who received HDs
Using the above matrices,find the matrices that represent

Can you please stop posting homework or test questions disguised with different topics? Pretty sure these types of questions are not allowed per the posting guidelines.

I thought you were 'sorry' before, OP?? The past 3 or 4 times you've posted this same stuff??

We **ARE NOT, WILL NOT** do your homework for you, period. Do you understand??? If you don't know how to answer the questions, then either read your textbook, ask your teacher, or actually try to LEARN SOMETHING ON YOUR OWN. What do you think is going to happen after you're spoon-fed answers to everything?? You won't know anything, and be even further behind than you are already, due to plain laziness.

You are not making your life easier by doing this, but making it harder.

I reported the last post. Obviously single brain celled troll...:-)

1 members found this post helpful.

not sure what you mean by "last post", but i reported the OP (original post).
can't believe this user's threads (there's at least one more very similar to this) aren't locked yet.
where are those vigilant moderators when they're really required?