c shell implemented
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Q: can someone help me write a c shell implemented in a unix based platform, that supports the…
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can someone help me write a c shell implemented in a unix based platform, that supports the following internal commands:
- cd- change the current default directory to. If theargument is not present, report the current directory. If the directory does not exist an appropriate error should be reported. This command should also change the PWD environment variable.
- clr - clear the screen.
- dir- list the contents of directory
- environ - list all the environment strings
- echo - display on the display followed by a new line (multiple spaces/tabs may be reduced to a single space)
- help - display the user manual using the more filter
- pause - pause operation of the shell until 'Enter' is pressed
- quit - quit the shell
- The shell environment should contain shell=/myshell where/myshell is the full path for the shell executable (not a hardwired path back to your directory, but the one from which it was executed)
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- The Shell or Command Line Interpreter is the fundamental User interface to an Operating System. Your task is to write a simple shell - myshell - that has the following properties: Tasks: The shell must support the following internal commands: i. cd - Change the current default directory to . If the argument is not present, report the current directory. If the directory does not exist an appropriate error should be reported. This command should also change the PWD environment variable. ii. cls - Clear the screen. iii. dir - List the contents of directory page by page. iv. xcopy to - Copy the folder to . v. print - Display on the display followed by a new line (multiple spaces/tabs may be reduced to a single space). vi. md - Create the folder . vii. rd - Remove the folder if the folder is empty, should display error message if it is not. ix. quit - Quit the shell. x. The shell environment should contain shell=/myshell where /myshell is the full…UNIX ASSIGNMENT - IXQuestion 8 : Rename all the files within a folder with suffix “CS_” i.e. suppose a folder has two files file_a.txt and file_b.pdf than they both should be renamed from a single command to CS_a.txt and CS_b.pdfLINUX QUESTIONS: Write Linux command for each question. Please use one single command to do following process. Q1: Make a directory name “ET506" and "ET506HW"in your home directory. Q2: Make a filename call “myfile.txt” and "root_file.txt". Q3: Copy <myfile.txt> with name <myfile_1.txt> Q4: Move <myfile.txt> to the directory “ET506” with name <file.txt> Q5: Delete <file.txt> Q6: Delete directory <ET506HW> Q7: Rename <root_file.txt> to <root_new_file.txt> Q8: Create five files name “file1.txt”, “file2.txt”, “file3.c”, “file4.cpp”, “file5.html”. Q9: List all files end with “.txt” Q10: List all files contain “file” Q11: Move every file with name contain “file” to directory “ET506”
- A tar file named "male.tar" has several files. One of the files in the archive is "lonnie.yml". Writethe command that will extract ONLY the file named "lonnie.yml". The command CANNOT contain/usefilter commands such as "grep", "sed", etc. The tar file is in the directory /red/white/blue/. Yourcurrent directory is /rootThe Problem: Your program needs the user to specify a configuration fileand a settings files. But the users can easily get the two mixed up causing havocwith your programThe Shell or Command Line Interpreter is the fundamental User interface to an Operating System. Your task is to write a simple shell - myshell - that has the following properties: Tasks: The shell must support the following internal commands: cd <directory> - Change the current default directory to <directory>. If the <directory> argument is not present, report the current directory. If the directory does not exist an appropriate error should be reported. This command should also change the PWD environment variable. cls - Clear the screen. iii. dir <directory> - List the contents of directory <directory> page by page. xcopy <source> to <destination> - Copy the <source> folder to <destination>. print <comment> - Display <comment> on the display followed by a new line (multiple spaces/tabs may be reduced to a single space). md <directory> - Create the folder <directory>. vii. rd…
- Computer Science Directory Task-2 Making a director in GUI is a task of selecting the folder and clicking on Add Folder. In DOS you need to move to the correct directory, then use the make directory command. At the command line prompt type the following: DIR /w MD ABC-test DIR /w Time /t Date /t Paste your Screen shot here Question 15 : Did you see your new directory on the second DIR? Question 16 Why or why not?in visual studio 2019 The GetCurrentDirectory method of Directory class is used to return the location of the current working directory (the location from which the program is running). true or falseusing a code in Linux As a developer, a local Library approaches you and requests you to develop a library management system for them. Some of the requirements stated by the library are: The Admin should be able to create accounts for different users of the system Librarian User Do everything that all types of users can do The Program should be menu driven, The Librarian should have the following on their menu: Insert a book (in a book_Records) View Issued Books Display all books available on the system Search for a book (in a book_Records) Delete a book A Registered User should be able to Search for a book, Issue a book Display all books available Unregistered User should be able to : Display all books in the library Search for a book The book_Records file should be auto-updated after Insertion and Deletion Every book in the system should have the following details : Book_id Book_name Author Publishing_house Year_of_publishing
- The following shell script adds entries to a file named journal-file in your home directory. This script helps you keep track of phone conversations and meetings. $ cat journal # journal: add journal entries to the file # $HOME/journal-file file=$HOME/journal-file date >> $file echo -n "Enter name of person or group: " read name echo "$name" >> $file echo >> $file cat >> $file echo "----------------------------------------------------" >> $file echo >> $file What do you have to do to the script to be able to execute it? Why does the script use the read builtin the first time it accepts input from the terminal and the cat utility the second time?UNIX ASSIGNMENT - IXQuestion 2: Write a command to list all the files inside a folder i.e. if there is a folder inside a folder then it should list all files inside the sub-folder which is inside the folder to be listed.Assume that we have an application that processes files of some sort. One version of the application requires users to type in full path names of filles for processing using a command-line. The other allows users to use a GUI version of the application to locate and "pick" a file for processing. Which version (command-line or GUI) do you think would work better for users? Why?PLEASE DO NOT write a LONG essay for this! I expect to see one clear statement of which version would be "better" and 2 - 3 points to support that choice.