QUESTION 31 Which Bash shortcut or command is used to re-execute a recent command by matching the command name? O Pressing Tab O Inumber O Istring history O Pressing Esc
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- What is the reason for not having a filename beginning with a hyphen (-)? Group of answer choices Command options starts with hyphen and hence filename could be confused as an option File name can only contain letters and digits The rule for filename states filename cannot start with hyphen It is okay to have filename start with hyphen because shell knows all the optionsExecute a command that undoes the change in Step 7.The mode portion of the command format is made up of the following parts: Category of users you are working with: u = user, g = group, o = other or a = all Permissions: r = read, w = write or x = execute Assume the file, pfile1, has the following permissions, r----x-w-. Use symbolic mode to change the permissions to rwxrw-r--.
- 76. When a command is not available for selection until certain other conditions are met, it is called a. dimmed command b. unavailable command c. dialog box d. cascadeFill in the blank question- Only answer without explanation Q. _____________ is the command to see the SELinux permission on a file.which command is used to edit cron jobs a) crontab -l b) crontab -e c) crontab -r d) ctontab -a
- Create a program that allows you to view and edit the sales amounts for each month of the current year. Can you PLEASE make sure the ADD command works where the user can input the command data for a given month. Console Monthly Sales program COMMAND MENU add - Add sales for specified month view - View sales for specified month edit - Edit sales for specified month totals - View sales summary for year exit - Exit program Command: add Three-letter Month: jan Sales Amount: 10317 Sales amount for Jan is 10,317.00. Command: add Three-letter Month: feb Sales Amount: 15293 Sales amount for Jan is 15,293.00. Command: view Three-letter Month: jan Sales Amount: 14317 Sales amount for Jan is 14,317.00. Command: edit Three-letter Month: jan Sales amount for Jan is 14,317.00. Command: totals Yearly total: 29,610.00 Monthly average: 14,805.00 Command: view Three-letter Month: july Invalid three-letter month. Command: exit Bye! MUST HAVE REQUIREMENTS…What does the following command do? $ mkdir dir dir/dir_01/dir_02$ mkdir .new_stuff $ ls After running these commands, you notice that you do not see your newly created directory in the output. Why?
- A user account “user1” has a primary group of “user1”. Write the command that will change the primary group of thisuser account from “user1” to “user2”.Use file permissions along with the chown, chmod, and chgrp commands to create a couple of folders: Create a directory (mkdir command) inside your home directory and set the permissions using the symbolic mode of chmod. The directory should be named dir1 and both you and the group cs260 should be able get into the directory and read from files. Only you should be able to write to the directory and no one other than you and the cs260 group should be able to access these files in any way. Create a file in this directory and put your name in it. Log in as Tess or Jessie and show that you can see the contents of the file. Save screenshots of both your commands to set up the folder, a listing of your home directory that shows the folder’s permissions, and you logged in as jesse/tess along with the contents of the file printed out on the screen (use vi or cat for this) Create a directory inside your home directory that both you and the cs260 group have full permissions on. No one else…Which filenames would be a subsequent ls command display?$ lsabc abd abe abf abg abh$ rm abc ab*rm: cannot remove ‘abc’ : No such file or directory
