D281 Linux Foundations - Set 2 - Part 1

Correct Answer: pwd

The pwd command shows the full path of the current directory where the user is located.

Correct Answer: rmdir

The rmdir command removes an empty directory. To remove non-empty directories, rm -r is used.

Correct Answer: chmod

The chmod command is used to modify the permissions of files and directories in Linux.

Correct Answer: touch

The touch command creates an empty file or updates the modification timestamp of an existing file.

Correct Answer: Displays the manual page for a command

The man command shows the manual pages (documentation) for other commands in Linux.

Correct Answer: Changes the current directory

The cd command is used to change the current working directory to a specified directory.

Correct Answer: vi

vi is the default text editor available on most Linux systems. Other editors like nano and vim are also common but may need to be installed.

Correct Answer: wc -l

The wc -l command counts the number of lines in a file and displays the result.

Correct Answer: Disk space usage

The df command displays information about the file system disk space usage, including available and used space.

Correct Answer: ps

The ps command provides information about the currently running processes, including their process IDs (PIDs).

Correct Answer: grep

The grep command is used to search for specific patterns or strings within files.

Correct Answer: head

The head command outputs the first 10 lines of a file by default, though the number of lines can be adjusted with options.

Correct Answer: To terminate a running process

The kill command is used to send signals to processes, usually to terminate them.

Correct Answer: APT

APT (Advanced Package Tool) is the package manager used for Debian-based Linux distributions such as Ubuntu.

Correct Answer: Displays text or variable value

The echo command is used to display a line of text or the value of a variable to the terminal.

Correct Answer: ls

The ls command lists the files and directories in the current or specified directory.

Correct Answer: To move or rename files and directories

The mv command is used to move or rename files and directories in Linux.

Correct Answer: Memory usage

The free command displays information about the total, used, and available memory on the system.

Correct Answer: ls -a

The ls -a command shows all files in a directory, including hidden files (which begin with a .).

Correct Answer: Sets read, write, and execute permissions for the owner, and read and execute permissions for the group and others

The chmod 755 command sets permissions for a file or directory, allowing the owner to read, write, and execute, and others to only read and execute.