UNIX/Linux Programming Answers

You have a user account on a Linux server. There is a file named "test.dat" in your home directory. You need to copy the file to another directory at "/mnt/test/". For the destination directory your account has only "write" permissions. "cp ~/test.dat /mnt/test/" fails with an error. On this Linux server "cp" is custom compiled not to show any error details. There are several possible reasons while the command failed, depending on the various factors. Please list as many potential reasons as possible.

Write a shell script for the following question

Disk space status

 Write a shell script for the following questions;

1.User account management

2. Disk space status

3.Combining and Splitting file

Write a shell script for the following questions;

Backup a file system

Write a shell script for the following questions;

Accessing data from a file (the file could be database, log, or text file)

Including the initial parent process, how many processes are created

by the program given below?

int main()

{

/* fork a child process */

fork();

/* fork another child process */

fork();

/* and fork another */

fork();

}

what is the ls option to print out only the author of a file name?

DECISION MAKINGDecision Making Under CertaintyLinear ProgrammingHOMEWORK 1You operate a small wooden toy company making two products: alphabet blocks and wooden trucks. Your profit is $30 per box of blocks and $40 per box of trucks. Producing a box of blocks requires one hour of woodworking and two hours of painting; producing a box of trucks takes three hours of woodworking but only one hour of painting. You employ three woodworkers and two painters, each working 40 hours a week. How many boxes of blocks (B) and trucks (T) should you make each week to maximize profit? Solve graphically (using millimetric paper) as a linear program and confirm analytically.

Write a script which does ls to a non-existent file. Display an exit status of the

previous command. Now create the file and again display the exit status

marks obtained by a student in two different subjects are input through the keyboard.

The student gets a division as per the following rules. (Using elif clause).

if percentage greater than or equal to 60 get First division

if percentage greater than or equal to 50 or less than 60 get Second division

if percentage greater than or equal to 40 or less than 50 get Third division

if percentage less than 40 Fail.