In Linux/Unix what is the name of the command that instructs the shell to rebuild the table containing the commands from the directories listed in your search path?
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In Linux/Unix what is the name of the command that instructs the shell to rebuild the table containing the commands from the directories listed in your search path?
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- The file phonenumbers.txt is in the phone directory (a subdirectory of the /contacts directory). What is the complete path to phonenumbers.txt?The Shell or Command Line Interpreter is the fundamental User interface to an Operating System. write a simple shell - myshell - that has the following properties: Supported commands: The shell must support 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…To make a directory called "tmp" with the Path object in the pathlib module, you would use O Path("tmp").makedir) O Path).makedir("tmp") makedir("tmp") O Path("tmp").mkdir) • Previous
- 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…A student launches the Python interpreter from his home directory. His home directory contains another directory called 'mydir', and 'mydir' contains two files called 'foo' and 'bar'. The home directory does not contain any files, only other directories. What will happen when he writes the following code at the Python prompt: >>> import os >>> filenames = os.listdir('mydir') >>> f= open(filenames[0]) ===================================================================================== A variable f representing a file object will be created, and the first file in the directory 'mydir' will be opened for writing in text mode. An error will be produced stating that the file to be opened does not exist. An error will be produced stating that filename is not subscriptable. A variable f representing a file object will be created, and the first file in the directory 'mydir' will be opened.LINUX 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”
- 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::: user1:$1$ssTPXdzX$.kv51AjM.FInu0lrH1dY30:15045:0:99999:7:::…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: 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…Linux Quiz (Accurate answers please!) Write the command to create a directory Write the command to print "hello World" to the terminal screen Write the command to move to the home directory of user linadm using a relative path. Write the command(s) that will set the color variable and send its value to a sub shell What login ids have access to the sudo command. Extract from the /etc/group file provide a list of all logins that run the bash shell. Include in your list the login name and login id #. Sort the results.
- You will develop a client side and a Servlet program that will work with a database. 1. The client (front end) should have a title "NJIT Credit Union", centered. 2. The client should have a background color. 3. The client should have a text field with label 'UserID' where user will enter userID (integer) and a Submit button with text "Submit". 4. An unsuccessful authentication should have a message printed on the screen, in red, stating that "Your authentication has failed, please try again.” (no pop up message). At this point the text field should get cleared and ready to accept a new input. Your program should not exit. 5. A successful authentication should be followed by a message on the screen, in green, stating that "Your authentication is successful" (no pop up message). 6. There should be two other text boxes with label "Deposit" and "Withdraw" where user will enter an amount (you should accommodate for decimals). These two text boxes should only be enabled after successful…MCQ: Which class waits for requests to come from the clients. It performs some operation based on that request, and then possibly returns a result to the client? DatagramSocket class ServerSocket class DatagramPacket class Socket classwrite a linux shell script to sort a table by column from a text file. The user will be able to choose which colmun does he want to sort. the text file : ID Namn Vikt L B H052 Hyllplan 1200 100 30 2077 Bokhylla 5000 120 30 80096 Skåp 15000 80 40 85146 Vit Garderob 9000 80 60 200149 Bänkskiva 3650 180 100 5163 Skrivbord 25800 120 60 70182 Pelarbord 1600 60 60 70