Snippet 1: check_file_permissions.c #include
1
#include
#include
int main (int argc, char* argv[])
{ char* filepath = argv[1];
int returnval;
// Check file existence returnval = access (filepath, F_OK);
if (returnval == 0) printf ("\n %s exists\n", filepath);
else { if (errno == ENOENT) printf ("%s does not exist\n", filepath);
else if (errno == EACCES) printf ("%s is not accessible\n", filepath);
return 0; }
// Check read access ...
// Check write access ...
return 0;
}
0.
(a) Extend code snippet 1 to check for read and write access permissions of a given file
(b) Write a C program where open system call creates a new file (say, destination.txt) and then opens it. (Hint: use the bitwise OR flag)
1. UNIX cat command has three functions with regard to text files: displaying them, combining copies of them and creating new ones.
Write a C program to implement a command called displaycontent that takes a (text) file name as argument and display its contents. Report an appropriate message if the file does not exist or can’t be opened (i.e. the file doesn’t have read permission). You are to use open(), read(), write() and close() system calls.
NOTE: Name your executable file as displaycontent and execute your program as ./displaycontent file_name
2. The cp command copies the source file specified by the SourceFile parameter to the destination file specified by the DestinationFile parameter.
Write a C program that mimics the cp command using open() system call to open source.txt file in read-only mode and copy the contents of it to destination.txt using read() and write() system calls.
3. Repeat part 2 (by writing a new C program) as per the following procedure:
(a) Read the next 100 characters from source.txt, and among characters read, replace each character ’1’ with character ’A’ and all characters are then written in destination.txt
(b) Write characters "XYZ" into file destination.txt
(c) Repeat the previous steps until the end of file source.txt. The last read step may not have 100 characters.

Answer:

I don't know  you should figure that out good luck

Explanation:

good luck

Can software work without Hardware? Why?

Directions: Identify the measuring devices and write its functions.
Write your answer in the space provided.
​

Tech A states that modern vehicles use asbestos as the brake material. Tech B states that asbestos is no longer used in brakes. Who is correct?

does technology shape society or does society shape technology?

widow in respect to word processing ​

What is the reddish-brown substance in the water?

Type the correct answer in the box. Spell all words correctly.
After the filming is finished, Rachel is responsible for arranging individual shots in a proper sequence. Which role is she playing
Rachel as playing the role of a(n)

Which code will allow Jean to print I like to code! on the screen?

Print ("I like to code!")
Print (I like to code!)
Print ("I like to code!)
Print = I like to code!

Give 2 examples of how technology/AI has helped to achieve the SDGs.​

A five-year prospective cohort study has just been completed. the study was designed to assess the association between supplemental vitamin a exposure and mortality and morbidity for measles. the rr for incidence of measles was 0.75 and the rr for measles mortality was 0.5. Assume these RR are significant. Regarding the RR reported above, which statement is correct?

a. Exposure to vitamin A appears to protect against morbidity and mortality for measles.
b. Exposure to vitamin A appears to be a risk factor for morbidity and mortality for measles.
c. Exposure to vitamin A is not associated with morbidity and mortality for measles.
d. Exposure to vitamin A is a risk factor for morbidity and a protective factor for mortality for measles.

What are some study habits that you practice? Check all that apply.
studying with friends
studying on a regular schedule
taking breaks while studying
getting good sleep
studying in a quiet area

Which view allows the user to see the source code and the visual representation simultaneously? to see the source code and the visual representation simultaneously? ​

Select the statements that explain marking and categorizing messages. Check all that apply.


The Read/Unread option is a toggle button that marks a message read or unread.

You can mark a message as unread when you want to come back to it later.

You can mark a message as read by turning off the Categories option.

Categories are color coded and can be renamed and sorted.

Grouping different types of messages together can be done using Read/Unread.

answer: A B D

Write a program that:

a. asks user to input the temperature in Fahrenheit.
b. It converts the inputted temperature into Celsius.
c. Calculates the speed of sound in meters per second and in feet per second. The program should display user's inputs and print the results in both m/s and ft/s

an algorithm to calculate average of numbers​

How do you guys feel about McCree’s new look in Overwatch 2? I personally like it but some people have a distaste towards it. I personally think it’s a step in the right direction and improves on how he used to look.

Build a class and a driver for use in searching your computer’s secondary storage (hard disk or flash memory) for a specific file from a set of files indicated by a starting path. Lets start by looking at a directory listing. Note that every element is either a file or a directory.
Introduction and Driver
In this assignment, your job is to write a class that searches through a file hierarchy (a tree) for a specified file. Your FindFile class will search a directory (and all subdirectories) for a target file name.
For example, in the file hierarchy pictured above, the file "lesson.css" will be found once in a directory near the root or top-level drive name (e.g. "C:\") . Your FindFile class will start at the path indicated and will search each directory and subdirectory looking for a file match. Consider the following code that could help you build your Driver.java:
String targetFile = "lesson.css";
String pathToSearch ="
C:\\WCWC"; FindFile finder = new FindFile(MAX_NUMBER_OF_FILES_TO_FIND);
Finder.directorySearch(targetFile, pathToSearch);
File Searching
In general, searching can take multiple forms depending on the structure and order of the set to search. If we can make promises about the data (this data is sorted, or deltas vary by no more than 10, etc.), then we can leverage those constraints to perform a more efficient search. Files in a file system are exposed to clients of the operating system and can be organized by filename, file creation date, size, and a number of other properties. We’ll just be interested in the file names here, and we’ll want perform a brute force (i.e., sequential) search of these files looking for a specific file. The way in which we’ll get file information from the operating system will involve no ordering; as a result, a linear search is the best we can do. We’d like to search for a target file given a specified path and return the location of the file, if found. You should sketch out this logic linearly before attempting to tackle it recursively.
FindFile Class Interface
FindFile(int maxFiles): This constructor accepts the maximum number of files to find.
void directorySearch(String target, String dirName): The parameters are the target file name to look for and the directory to start in.
int getCount(): This accessor returns the number of matching files found
String[] getFiles(): This getter returns the array of file locations, up to maxFiles in size.
Requirements
Your program should be recursive.
You should build and submit at least two files: FindFile.java and Driver.java.
Throw an exception (IllegalArgumentException) if the path passed in as the starting directory is not a valid directory.
Throw an exception if you've found the MAX_NUMBER_OF_FILES_TO_FIND and catch and handle this in your main driver. Your program shouldn't crash but rather exit gracefully in the unusual situation that we've discovered the maximum number of files we were interested in, reporting each of the paths where the target files were found.
The only structures you can use in this assignment are basic arrays and your Stack, Queue, or ArrayList from the previous homeworks. Do not use built-in data structures like Java's ArrayList. To accomplish this, put in the following constructor and method to your ArrayList, Stack, or Queue:
public ArrayList(Object[] input) { data = input;
numElements = input.length;
}
public Object get(int index) {
return data[index];
}

The Payroll Department keeps a list of employee information for each pay period in a text file. The format of each line of the file is the following: Write a program that inputs a filename from the user and prints to the terminal a report of the wages paid to the employees for the given period. The report should be in tabular format with the appropriate header.

When designing code, which of the following best describes the purpose of a Post Mortem Review?

To obtain feedback on the code
To translate pseudocode to program code
To use code only one time
To check if others have the same code

HELPOO ILL GIVE BRAINLIEST

what is the processing speed for the second generation of computers​

Which code segment results in "true" being returned if a number is odd? Replace "MISSING CONDITION" with the correct code segment.

a) num % 2 == 0;
b) num % 2 ==1;
c) num % 1 == 0;
d) num % 0 == 2;

Why is hydroelectricity counted as a conventional source of energy.. People say conventional sources of energy is the same as non-renewable energy sources

When adjusting the bounding box around text, hold the key to scale proportionately or the key to skew the object

when computer network are joined together they form a bigger network called the​

The________ partitioning scheme enables you to create more than four primary partitions without needing to use dynamic disks

A local company is expanding its range from one state to fifteen states. They will need an advanced method of online communication and someone to design an advanced and thorough database to store a lot of information. Who should they hire to assist with both these goals?

a Database Architect and a Computer System Analyst who focuses in interactive media
a Computer Hardware Engineer and a Software Developer who focuses in interactive media
a Software Developer and a Web Developer who focuses in programming and software development
a Web Administrator and a Computer System Analyst who focuses in information support and services

The image classification technology (Darknet) shown in the video is
free for anyone to use.
Select one:
a. proprietary
b. web-based
C. shareware
d. open source

Visual Basic Help:
Code a program that reads a test score (number) from a text-box, each time a button is clicked. In other words, every time a new score is entered in the text-box, the score should be taken by the program, stored and the text-box should be cleared, so that the user can enter a new score. The program should be able to check that the user is entering a number. If the user enters something different than a number (or leaves the text-box empty), the program should not continue and it should display a warning message to the user. After entering as many scores as wanted, the user should be able to click on a second button to display the two highest scores, among all the ones entered until that point. The program should also display the total number of scores entered by the user. Also, once the user clicks on the button to display the results and the results are displayed, the program should get ready to get a new set of scores and start again. If the user starts writing a new score, the text-boxes with the results should be cleared.
Example: Assume the user enters the following scores: 10, 5, 20. The scores are entered once at the time in the top text-box; when a score is entered, the user presses the button to "Read" the score. The score is taken by the program and the text-box is cleared, so that the next score can be entered. This process can be repeated as many times as the user wants and for as many scores as the user wants. Once all the scores are entered and read(or taken-in)by the program, the user clicks on the second button to display the results. The program should then display the two highest scores, among the ones entered. So, in the example, this would be 10, 20. And it should display the total number of scores entered by the user. In the example, it would be 3.
After that, the user should be able to repeat the process and enter a new set of scores, if wanted. The program should therefore be ready to take in new inputs and start the process again. When the user starts typing the new score, the text-boxes with the previous results (two highest scores and total num. of scores) should get cleared

What is the importance of larger fonts? Explain with the help of examples. ​