Which command in Linux is used to copy a file?

• A. mv
• B. cp
• C. rm
• D. cat

Answer: (B)

The command used in Linux to copy a file is 'cp'. This command allows users to create a duplicate of a specified file, leaving the original file intact. When using 'cp', you can specify the source file and the destination where the copy should be created. This functionality is essential for file management, enabling users to back up data or create multiple versions of a file without altering the original.

In contrast, other commands serve different purposes. The 'mv' command is utilized for moving or renaming files, rather than copying them. The 'rm' command is for removing or deleting files, which is the opposite of copying. Lastly, 'cat' is used to concatenate and display file content but does not provide any copying functionality. Understanding the distinct roles of these commands is vital for effective file manipulation within a Linux environment.