Question

CompTIA A+ 15A.RV

Features of Linux
Answer the following questions:
1. Which Linux command will display detailed information about all files and directories in the current directory, including system files?
2. A command has generated a large amount of data on the screen. What could you add to the command to make the output more readable?
3. What command would allow you to delete the contents of the folder /home/jaime/junk and all its subdirectories?
4. What command could you use to move a file names.doc from your current directory to the USB stick linked to folder /mnt/usb?
5. A file is secured with the numeric permissions 0774. What rights does another user account have over the file?
6. Which Linux command allows a user to run a specific command or program with superuser/root privileges?

Answer 1

The Linux commands for displaying detailed information about files and directories, making output more readable, deleting directories, moving files, understanding file permissions, and running commands with superuser privileges.

Step-by-step explanation:

1. The Linux command ls -l will display detailed information about all files and directories in the current directory, including system files. The '-l' option provides a long listing format which shows permissions, owner, group, size, and modification date of each file and directory.
2. To make the output of a command more readable, you can pipe the output to the less command. For example, 'command | less'. This allows you to scroll through the output and view it page by page.
3. The command to delete the contents of the folder /home/jaime/junk and all its subdirectories is rm -r /home/jaime/junk. The '-r' option stands for recursive, which means it will delete all files and directories within the specified directory.
4. To move a file named 'names.doc' from the current directory to the USB stick linked to folder /mnt/usb, you can use the command mv names.doc /mnt/usb.
5. A file secured with numeric permissions 0774 means that the owner has read, write, and execute permissions, the group has read and write permissions, and other users have read-only permissions.
6. The Linux command sudo allows a user to run a specific command or program with superuser/root privileges. This command is used to perform administrative tasks that require elevated permissions.