Renaming or moving files in Unix — choose the correct command Which command is used on Unix/Linux to rename a file (and more generally to move a file to a new path or name)?

Introduction / Context:
File management in Unix relies on a small set of powerful commands. Renaming is not a distinct operation; it is handled by the same command that moves files between paths. Recognizing the correct tool is essential for scripting and daily use.

Given Data / Assumptions:

• We are on a Unix/Linux system using standard coreutils or equivalent.
• The goal is to change a file’s name (possibly in the same directory).
• We want the canonical, always-available command.

Concept / Approach:

The mv command moves files and directories. If the destination is within the same directory but with a different name, the effect is a rename. While some distributions ship a rename utility, its syntax and availability vary and it handles pattern-based mass renames; mv is the portable tool. remove is not a standard command; file deletion uses rm. ren is a DOS/Windows alias, not standard on Unix.

Step-by-Step Solution:

Verification / Alternative check:

Consult man mv. You will see it supports moving and renaming. Experiment in a test directory to confirm behavior.

Why Other Options Are Wrong:

• rename: not guaranteed to exist or be consistent across systems.
• remove: not a standard command (use rm to delete, not rename).
• ren: DOS/Windows syntax; not standard on Unix.
• None of the above: incorrect because mv is correct.

Common Pitfalls:

Overwriting existing files without -i; renaming across filesystems may copy then delete; remembering that permissions may restrict renames in directories without write/execute rights.

Final Answer:

mv