Programming

Programming questions? Ask a programmer for answers ASAP

Ask a Computer Expert,
Get an Answer ASAP!

You have helped me before, can you help me with a few unix…

Customer Question
You have helped me before...
You have helped me before, can you help me with a few unix scripts now? I have a few of tuem to be written and need them by monday. There are about 5 different unix and perl scripts. I am not sure how much i should pay for somethig like this but if i get themto you can you get me a quote?
Submitted: 2 years ago.Category: Programming
Show More
Show Less
Ask Your Own Programming Question
Answered in 14 hours by:
2/6/2016
Programmer: educatortech, Specialist replied 2 years ago
educatortech
educatortech, Specialist
Category: Programming
Satisfied Customers: 5,240
Experience: M.A., M.S. Education / Educational Administration
Verified

Hello, my name is Greg.

Can you provide the specifics of what you are needing for this prompt as what you have provided above does not really show what is required. The more information you can provide, the easier it will be to find an expert who is best able to support your needs.

You can upload using a file sharing site such as mediafire.com or wikisend.com and then share the link here with us.

Ask Your Own Programming Question
Customer reply replied 2 years ago

To become familiar with Perl programs and to see how to interact with the operating system, write a Perl program that performs the following tasks:



  • Generate a menu to ask the user for the task that he or she would like to see performed.

  • The available tasks are as follows:


    • Show current date and time.

    • Show users currently logged in.

    • Show the name of the working directory.

    • Show the contents of the working directory.


  • Prompt the user for the choice, and perform the system command.


You now need to write a script for user maintenance. Write a script that will perform the following tasks:



  • Prompt the system administrator for all valid input parameters

  • Generate a menu to ask which task is needed to be performed

  • Create a UNIX group

  • Drop a UNIX group

  • Create a user

  • Drop a user


Note that as part of the Create User section, a UNIX group many be identified that does not already exist, so that group will need to be created as part of the process.

A third script that you need to write will kill all of the processes associated with a user. The following are the requirements:



  • Prompt the system administrator for the target user name

  • List the running processes for that user

  • Confirm with the system administrator before killing the processes

  • Kill the processes after confirmation


It is very important to note with this task that you should only kill processes for a user and his or her running processes; do not arbitrarily kill running daemons.

Add to your Perl script the ability to kill a user’s processes (from shell script 3). The requirements for this task include the following:



  • Add this option to the menu.

  • Add the code/process into a subroutine.

  • Use an array to store the list of processes that need to be reviewed and killed.

  • Process the kill using the array.


Next, you have been asked by different users to explain how to compile a program in a UNIX environment.

Finally, take the following C program (save it as "power2.c"), and create it as a file in your UNIX environment:

/* power2.c -- Print out powers of 2: 1, 2, 4, 8, .. up to 2^N */

#include <stdio.h>
#define N 16

int main(void) {
int n; /* The current exponent */
int val = 1; /* The current power of 2 */
printf("/t n /t 2^n/n");
printf("/t================/n");
for (n=0; n<=N; n++) {
printf("/t%3d /t %6d/n", n, val);
val = 2*val;
}
return 0;
}
/* It prints out :
n 2^n
===============
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 128
8 256
9 512
10 1024
11 2048
12 4096
13 8196
14 16384
15 32768
16 65536
*/

(College of Science and Technology, n.d.)

Describe the behavior when you compile the program, with no options. What is the command that you would use to compile the code and create the executable "power2"?

Finally, compare and contrast the usage of a compiled and interpreted program.

Was this answer helpful?
Ask educatortech Your Own Question
educatortech
educatortech
educatortech, Specialist
Category: Programming
Satisfied Customers: 5,240
5,240 Satisfied Customers
Experience: M.A., M.S. Education / Educational Administration

educatortech is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed.

One Happy CustomerNew York

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

ATLPROG

ATLPROG

Computer Software Engineer

7,677 satisfied customers

MS in IT.Several years of programming experience in Java C++ C C# Python VB Javascript HTML

LogicPro

LogicPro

Computer Software Engineer

7,131 satisfied customers

Expert in C, C++, Java, DOT NET, Python, HTML, Javascript, Design.

unvadim

unvadim

Computer Software Engineer

1,168 satisfied customers

Good knowledge of OOP principles. 3+ years of programming experience with Java and C++. Sun Certified Java Programmer 5.0.

lifesaver

lifesaver

Computer Software Engineer

950 satisfied customers

Several years of intensive programming and application development experience in various platforms.

ehabtutor

ehabtutor

Computer Software Engineer

936 satisfied customers

Bachelor of computer science, 5+ years experience in software development, software company owner

TheDoctor

TheDoctor

Software Engineer

893 satisfied customers

M.S. in Internet Information Systems

The-PC-Guy

The-PC-Guy

Software Engineer

800 satisfied customers

Extensive Knowledge in PHP, MYSQL, CSS & Javascript

< Previous | Next >

Related Programming Questions
I need some help with my website. No just need some
I have real estate site from your company and my designer ncan not find some datebase for this site … read more
Pete
Pete
Engineer
Bachelor\u0027s Degree
1,130 satisfied customers
I am having difficulty with a chart graph. I want the
I am having difficulty with a chart graph. I want the horizontal axis to switch form column one to column two … read more
The-PC-Guy
The-PC-Guy
Software Engineer
Bachelor's Degree
800 satisfied customers
I'm sorry, I may not be in the right "place." I need help
I'm sorry, I may not be in the right "place." I need help fixing an error when I try to login to my blog. It's a personal one, not a business one. … read more
Mirza Vaseem
Mirza Vaseem
Bachelor\u0027s Degree
2 satisfied customers
On the program we just work with. The questions crash when
Ok, on the program we just work with. The questions crash when you enter two or more words. Such as New York, a full name etc. How I get it to take more than on word?… read more
Jeevan DSouza
Jeevan DSouza
Professor
PhD
4 satisfied customers
I made a business wesite this morning and I don't need it.
Please help me. I made a business wesite this morning and I don't need it. Can I cancel and get my money back? … read more
Samuel NetEngineer
Samuel NetEngineer
Associate\u0027s Degree
647 satisfied customers
I am writing some c ++ code and some of the math is coming
I am writing some c ++ code and some of the math is coming out wrong, also when run the code it crashers ever so often … read more
Michael Rademacher
Michael Rademacher
MBA
11 satisfied customers
However, this popped up on the debugger. The thread 0x2b70
I'm sorry to bother you again, however, this popped up on the debugger.The thread 0x2b70 has exited with code 0 (0x0). The thread 0x3bc8 has exited with code 0 (0x0). The program '[15760] travel++.exe… read more
Pete
Pete
Engineer
Bachelor\u0027s Degree
1,130 satisfied customers
How to display a php variable in xml statement, It is a
this is my xml code header('Content-type: text/xml');function respond($status, $text) { echo <<… read more
George Sibiya
George Sibiya
PhD
288 satisfied customers
I need to add audio track background track and do voice
i need to add audio track background track and do voice presentation of my ppt presentation... … read more
Jeevan DSouza
Jeevan DSouza
Professor
PhD
4 satisfied customers
Launch a soap request that uploads a file to a server after
Launch a soap request that uploads a file to a server after dropping (drag & drop) a file into a local directory. The local directory would be a space, a box in a simple software.I already know the so… read more
George Sibiya
George Sibiya
PhD
288 satisfied customers
I manage a site for a client that was built by someone else.
Hi, I manage a site for a client that was built by someone else. This past week, they stopped receiving submissions from their 2 contact forms on their site. I've identified the .php files and have th… read more
The-PC-Guy
The-PC-Guy
Software Engineer
Bachelor's Degree
800 satisfied customers
Implement a program that prints paychecks for a group of
Implement a program that prints paychecks for a group of student assistants. … read more
LogicPro
LogicPro
Computer Software Engineer
Bachelor of Technology
7,131 satisfied customers
I keep getting a !Syntax error when trying to use this
Hi, I keep getting a !Syntax error when trying to use this formula in quick parts field =SUMIF(C2:C36, ">=A", D2:D36) … read more
The-PC-Guy
The-PC-Guy
Software Engineer
Bachelor's Degree
800 satisfied customers
Trying to make a column of job codes, they should be 4
Trying to make a column of job codes, they should be 4 digits (so need to include leading zeros) and concatenate with ".01" but can't get the result to be 0000.00 format. … read more
George Sibiya
George Sibiya
PhD
288 satisfied customers
Is there someone that could help write a .NET program for
Is there someone that could help write a .NET program for me? VB .NET … read more
George Sibiya
George Sibiya
PhD
288 satisfied customers
I have the following EXCEL formula but I am not sure exactly
Hello I have the following EXCEL formula but I am not sure exactly which each part is doing. Can you provide insights? LEFT(TRIM(G7),FIND("~",SUBSTITUTE(G7," ","~",LEN(TRIM(G7))-LEN(SUBSTITUTE(TRIM(G7… read more
Richard
Richard
IT Manager
IT Manager, Consultant
3,417 satisfied customers
Can you help me with web portal. Using phprunner with sql.
Can you help me with web portal JA: Is there a specific language you're coding in? Customer: Using phprunner with sql JA: What's your objective for this SQL project? Customer: And I is windows JA: Any… read more
George Sibiya
George Sibiya
PhD
288 satisfied customers
I need helped with my C++ coding assignment? I just need the
Hi I need helped with my C++ coding assignment? I just need the actual code to put in to my Icloud9 to make my program run? Would like if someone could review what I have so far and explain what code … read more
George Sibiya
George Sibiya
PhD
288 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x