A technician needs to verify file permissions on a specific Linux file. Which command would the technician use?

  • sudo
  • cd
  • vi
  • ls -l
Explanation & Hint:

To verify file permissions on a specific file in Linux, the technician would use the command:

ls -l

The ls -l command lists files in ‘long format’, which includes the file permissions, number of links, owner name, owner group, file size, timestamp, and filename. If the technician needs to check the permissions of a specific file, they can append the filename to the command. For example:

ls -l /path/to/file

This will display the permissions for the specified file at the given path.

  1. sudo: This command stands for “superuser do” and is used to execute a command with superuser (root) privileges. It’s a powerful command that allows a permitted user to perform tasks that require administrative or root permissions, such as installing software, changing important system configurations, or accessing secured files.Example: sudo apt-get update would run the update process for package lists with root privileges.
  2. cd: Short for “change directory,” this command is used to change the current working directory in the shell environment. It’s one of the most basic and frequently used commands in Linux.Example: cd /var/www would change the current working directory to /var/www.
  3. vi: This is a text editor in the Unix and Linux systems. vi stands for “visual editor,” and it allows a user to create or modify text files. It has different modes like insert mode, command mode, and ex mode, which the user needs to switch between to perform various tasks.Example: vi myfile.txt would open myfile.txt in the vi editor, or create it if it doesn’t exist.
  4. ls -l: The ls command is used to list the contents of a directory. When used with the -l option (long listing format), it displays detailed information about each file and directory, such as permissions, number of links, owner, group, size, and date of last modification.Example: ls -l would list the detailed contents of the current directory, while ls -l /path/to/directory would list the contents of /path/to/directory.

For the specific task of verifying file permissions, ls -l is the appropriate command because it provides the detailed permissions view needed for this purpose.

For more Questions and Answers:

CyberOps Associate 1.0 & CA 1.02 Final Exam Answers Full 100%