C shell. A child process executes shell commands. Shell script. The user's e
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C shell. A child process executes shell commands. Shell script. The user's executables may be in (/bin/). Shell doesn't take command line arguments or pipes.
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- What are two ways you can execute a shell script when you do not have execute permission for the file containing the script? Can you execute a shell script if you do not have read permission for the file containing the script?If wrong answer this time will downvote it Create a class with a static main that tests the ability to resolve and print a Path: • Create an instance of a FileSystem class. • Resolve an instance of a Path interface from a directory path and filename. • Print the constructed Path with System.out.println() method. 2. Create a class with a static main that tests the ability to resolve and print a Path: • Create an array of Path class. • Instantiate instances of Path with absolute and relative paths. • Print the constructed elements of the array of Path class with System.out.println() method. 3. Create a class to test serialisation class that implements serializable, it should implement the following: • A static void method that serialises an object. • A static void method that deserializes an object. • A static main method that tests the two by moving an object from one to the otherHelp with Python coding issue The Linux operating system is a very popular server OS. A network administrator has to protect the login/password files stored on the servers. In Linux there are two important files: /etc/passwd And it contains rows that look like this: root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin user1:x:15:51:User One:/home/user1:nologin user2:x:15:51:User One:/home/user1:nologin user3:x:15:51:User One:/home/user1:nologin This file contains login information. It's a list of the server's accounts that has userID, groupID, home directory, shell and more info. And the second file /etc/shadow, contains rows that look like this: root:$1$TDQFedzX$.kv51AjM.FInu0lrH1dY30:15045:0:99999:7::: bin:*:14195:0:99999:7::: daemon:*:14195:0:99999:7::: adm:*:14195:0:99999:7::: ftp:*:14195:0:99999:7:::…
- Parallel:- Implement the parallel utility that has 3 command line arguments. This will execute 4 copies of the sleep process for 10 seconds. Your program should allow an arbitrary number of command line arguments for the process to be run in parallel. The parent process should wait for all child processes to finish before exiting back to the shell. If the format of the command is not recognized (e.g. the first argument is not an integer), an error can be displayed. All your code should be contained in the parallel.c file, and the Makefile. ./parallel<processes><cmd><args> For example, if you type: ./parallel 4 sleep 10 OUTPUT: SUCCESS in running 4 parallel sleep tasksBash Shell Scripting – The Basics and Variables Execution Execute this assignment according to the following guidelines: Complete the UNIX/LINUX Tutorials located in the Topic Materials: Shell Scripting, What is Shell, Using Variables, and Special Variables. Create a bash script that does the following: Create a text file 'compile.sh' in the Text Editor (or Atom or vi editors) Indicate the Shell/Script type in line 1: #!/bin/sh You can print text to console by using: echo "My Text" command. Enter the required commands to compile and run your Hello World C program. Exit your Text Editor (make sure to save your work). Run your script 'compile.sh' from a Terminal session by entering: ./compile.sh What happened? Give the script permission using: chmod 777 test.sh command. Remove the hard code file names and use a bash script argument: Open the 'compile.sh' script in the Text Editor (or Atom or vi editors). Save the program to compile script that is passed as a script argument in…TASK: Build a simple shell.DESCRIPTION:Write a shell program in C similar to "csh" that takes commands from thekeyboard. In particular, your shell prompt must be the current time(instead of, say, % as is common in UNIX).Make it simple; that is, do not allow it to handle background processes,it can ignore the control-C key, and especially, do not design it tointerpret shell scripts.You will need the following system calls:forkwaitpidone of execv, execve, execvp (read the manual pages).You must NOT use the C library function "system".
- Object code is created by compilers and assemblers from source files. It is possible to run object files by linking them together. Without the need for linking, compilers may generate executables. In what ways does it fall short?Get-OSVersion - Write a PowerShell function called Get-OSVersion that returns the numeric version of the operating system The function should take an input parameter called ComputerName which is the name of the computer system from which to get the OS Version • The function should gather the required information from the Win32 ComputerSystem class in WMI • The function should output a string stating the OS version on the computer inspectedThe 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…
- A Command-Line Interpreter, or Shell Your shell should read the line from standard input (i.e., interactive mode) or a file (i.e., batch mode), parse the line with command and arguments, execute the command with arguments, and then prompt for more input (i.e., the shell prompt) when it has finished. 2. Batch Mode In batch mode, your shell is started by specifying a batch file on its command line. The batch file contains the list of commands that should be executed. In batch mode, you should not display a prompt, but you should echo each line you read from the batch file back to the user before executing it. You will need to use the fork()and not exec()family of system calls. You may not use the system() system call as it simply invokes the system’s /bin/bash shell to do all of the work. You may assume that arguments are separated by whitespace. You do not have to deal with special characters such as ', ", \, etc. However, you will need to handle the redirection operators…Programmin language is C: Create a file , print on that file the following: clients.txt account (int) first name last name balance : double you will take client information from the user and then you write on the file. 5 clients >>>>>>>>>>>>>>>>>>>>>>>>>>>>> Programmin language is CBook reference: Windows PowerShell Step by Step 3rd Edition - Ed WilsonChapter 14 5. What does the select object -expandpropery parameter do? 9. What is a method to search for dynamic classes under *time classname?