In Unix/Linux file management, which command is used to remove (delete) a file from the filesystem?

Introduction / Context:
Deleting files is a frequent administrative and user task. Unix/Linux provides a simple command specifically for removing files and, with the right options, directories. Knowing the correct command—and its safety flags—prevents accidental data loss and improves scripting reliability.

Given Data / Assumptions:

• You need to delete regular files from the command line.
• Standard POSIX commands are available.
• Basic usage suffices; recursive deletion is a related but separate option.

Concept / Approach:

The command to remove files is rm. By default it unlinks each file name. To remove directories and their contents, use rm -r (or -rf with caution). Other listed commands are either nonstandard or have different semantics: mv moves/renames files; del is a DOS command; remove is not a standard Unix command-line tool.

Step-by-Step Solution:

Verification / Alternative check:

Run ls before and after rm to confirm removal. Use -i for interactive confirmation if safety is a concern.

Why Other Options Are Wrong:

• remove: not a standard POSIX command.
• mv: moves/renames; doesn't delete.
• del: DOS/Windows command, not Unix.
• None of the above: incorrect because rm is correct.

Common Pitfalls:

• Using rm -rf / or similar destructive globs; always double-check paths.
• Deleting files without permissions—prepend sudo if appropriate.

Final Answer:

rm.