Which command is used to change the permissions of a file in Linux?

Which command is used to change the permissions of a file in Linux?

• A. chmod
• B. kill
• C. ping
• D. ln

Answer: (A)

The command used to change the permissions of a file in Linux is "chmod." This stands for "change mode" and allows users to define who can read, write, or execute a file. Through this command, file permissions can be modified by specifying the user type (owner, group, others) and the desired permissions (read, write, execute) using symbolic (e.g., u+r for adding read permission to the user) or octal (e.g., 755) notation. The other commands relate to different functionalities: "kill" is used to terminate processes, "ping" checks connectivity between hosts on a network, and "ln" is used to create links between files. None of these commands serve the purpose of changing file permissions, which is why they are not correct answers.

The command used to change the permissions of a file in Linux is "chmod." This stands for "change mode" and allows users to define who can read, write, or execute a file. Through this command, file permissions can be modified by specifying the user type (owner, group, others) and the desired permissions (read, write, execute) using symbolic (e.g., u+r for adding read permission to the user) or octal (e.g., 755) notation.

The other commands relate to different functionalities: "kill" is used to terminate processes, "ping" checks connectivity between hosts on a network, and "ln" is used to create links between files. None of these commands serve the purpose of changing file permissions, which is why they are not correct answers.