UNIX, how would you remove the directory test and all files and subdirectories (recursively) in it? The directory test is located in (is a subdirectory of) /home/myid/smith/projects. O rmdir /home/myid/smith/projects/test rmdir -r /home/myid/smith/projects/test rm -r /home/myid/smith/projects/test O rm -r projects/test
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- in fedora 37 1. Create a directory named Module9 and navigate to that directory. 2. Copy the file pay.dat from Module8 to Module9. Here it is again, just in case: 0001:John Smith:15.40 0002:Jane Smith:15.41 0003:George Jungle:12.10 0004:Ursula Jungle:16.11 3. Using a pipe symbol for filtering and sort the data to stdout. Enter: cat pay.dat | sort 4. Now, on your own, using a pipe symbol for filtering and sort the data in descending order to stdout and append that to a file named SortPay.dat. 5. Copy pay.dat to three files named: pay10,dat, pay12.dat, and pay02.txt. You may need to use multiple commands. 6. Use pattern matching to locate only pay02.txt. 7. Enter the command to remove pay2.dat and redirect both stdin and stdout to a file named RemovePay.txt. 8. Run the command in step 7 again. 9. Display the contents of RemovePay.txt 10. Take screen captures please explain each step and take screenshots1) Create a daemon in C in the Unix environment, your daemon must create a text file called aitDaemonLog.txt and populate it with 1000 lines of a string each line must be written after 10 seconds, the string must end with the count of the string;. 2)Create a shell script that lists all the files in the present working directory in long format name this file listMyFiles.sh. Write a c program that uses the system() function and uses it to run listMyFiles.sh 3)Write a c program to write a string of your own choosing into shared memory then read the contents of the shared memory created in 4)demonstrate in a c program how to use a fork to create a child process, using pipes let this child process send a message which is read by the parent process 5) Write a c program that shows the PID, PPID, UID and GID of a running process, let this process fork thus creating a child process, let the parent process count from 0 to 50 and the child process from 0 to 25 each process showing while counting…Implement a simple version of the linux cat command in C++. Use the system calls open(), get() and close(). cat - reads a file as specified by the user and prints its contents. A typical usage is as follows: If from my terminal y run ./cat main.cpp the contents of main.cpp. will be printed. Your program cat can be invoked with one or more files on the command line; it should just print out each file in turn. Example: [terminal]$ ./cat main.cpp main2.cpp #include <iostream>using namespace std;int main(){cout << "Hello, World!"; return 0;}#include <iostream>using namespace std;int main(){cout << "Programming is great fun!";return 0;} As you can see content of main.cpp was printed first and the content of main2.cpp
- Create a daemon in C in the Unix environment, your daemon must create a text file called aitDaemonLog.txt and populate it with 1000 lines of a string each line must be written after 10 seconds, the string must end with the count of the string;Given a directory full of files, how could you rename everything to have a .bak extension? a) mv * * .bak b) for i in ls; do mv $i $i.bak; done c) for i in ls; do mv i i.bak; done d) for i in *; do mv $i $i.bak; doneComputer Science Write a C/C++ program, call it findExt, to find all files in a directory hierarchy, whose extensions are in the extension list provided as arguments to the program. Your program should print the whole pathnames of the found files. Synopsis: findExt <extension-list> [-t target-directory] When target-directory is missing, the working directory (./) will be the target directory Some sample runs: $ findExt txt pdf That is, find all files whose extensions are either txt or pdf in the directory hierarchy ./ $ findExt jpg -t $HOME //target directory is home directory That is, find all files whose extensions is jpg in the directory hierarchy $HOME Requirement: - You must use the system call nftw() that allows you to walk across a file tree. This system call will do all the recursive walk and each time it visits a file or a directory, it will call your own function (a function that you pass as a parameter).
- Write a shell program that renames all files in the current directory. It should remove all vowels from the filenames. For example, apple.txt should be renamed ppl.txt. If the resulting filename is an empty string, then the file should not be renamed.How is this code being ran? When i try to test this code i get the following errors: make -C /lib/modules/5.11.0-1027-raspi/build M=/home/admin/csc440/project1/jiffies modules make[1]: Entering directory '/usr/src/linux-headers-5.11.0-1027-raspi' CC [M] /home/admin/csc440/project1/jiffies/jiffies.o /home/admin/csc440/project1/jiffies/jiffies.c: In function ‘myInit’: /home/admin/csc440/project1/jiffies/jiffies.c:91:46: error: passing argument 4 of ‘proc_create’ from incompatible pointer type [-Werror=incompatible-pointer-types] 91 | my_proc = proc_create("jiffies", 0666, NULL, &fops); | ^~~~~ | | | struct file_operations * In file included from /home/admin/csc440/project1/jiffies/jiffies.c:15: ./include/linux/proc_fs.h:109:122: note: expected ‘const struct proc_ops *’ but argument is of type ‘struct file_operations *’ 109…) Write Linux commands for the following:i) Copy a file test1.py from Prac01 directory to Subdir1 directory in the followingdirectory structure.FOPPrac01Prac02Prac03-Subdir1Subdir2(Where FOP is at the top level then Prac01, 02 and 03 are at next level and Subdir1and 2 are next to next level.)ii) To delete a directory DIR which has a file test2.py in it.
- You have written a C program which was stored in file someProgram.c, under directory /home/chloe/TestingCode; in that same directory, you have a sub-folder called Old. Answer the following questions (by typing the appropriate single command line instruction in each case), assuming you are currently in /home/chloe/TestingCode: Compile the code in someProgram.c. Create a new sub-folder called New under /home/chloe. Show the location (i.e., the full path) of the current directory. Make a copy of the file someProgram.c and call it someProgram_v2.c.Write a C++ program using Windows API to CreateDirectory – For Creating the Directory BOOL CreateDirectory(LPCSTR lpPathName, LPSECURITY_ATTRIBUTES lpSecurityAttributes ); Return Type – Boolean (TRUE or FALSE). LPCSTR – Long Pointer to constant String. lpPathName – Where your directory will reside. lpSecurityAttributes – Security for Directory and default it is NULL. If this function Fails then its return FALSE or ZERO. Also We can print the Error Information with the help of GetLastError() function. CreateDirectory Function Link.In C++ Implement a simple version of the linux grep command in C++. grep - Looks through a file, line by line, trying to find a user-specified search term in the line. If a line has the word within it, the line is printed out, otherwise it is not. Use the system calls open(), getline(), close(). Requirements (examples run from. terminal) Your program grep is always passed a search term and zero or more files to grep through (thus, more than one is possible). It should go through each line and see if the search term is in it; if so, the line should be printed, and if not, the line should be skipped. [terminal]$ ./grep ! main.cpp main2.cppcout << "Hello, World!";cout << "Programming is great fun!"; The matching is case sensitive. Thus, if searching for world, lines with World will not match. Lines can be arbitrarily long (that is, you may see many many characters before you encounter a newline character, \n). grep should work as expected even with very long lines. For…