Without ls -a , many important files would remain invisible, leading users to unknowingly omit them during backups or permissions audits. Conversely, blindly operating on all dot files—e.g., rm -rf .* —can be disastrous, as .* matches . and .. as well. Thus, ls -a is a diagnostic tool, not an invitation for bulk operations.
Note: The -d flag is important here; it tells the system to list the directory names themselves rather than listing the contents of every hidden subdirectory. 5. Why do "Dot Files" exist? ls filedot