: Use zip -f archive.zip to update files that already exist in the archive but ignores any new files on your disk. 4. Security Note

When updating or extracting ZIP files, be aware of or Path Traversal vulnerabilities. It is recommended to use modern, patched versions of tools like 7-Zip or NanaZip to prevent attackers from overwriting sensitive system files during extraction. 7-Zip V24.09: What's New And Why You Should Care

: This version features optimized algorithms that increase both archiving and extraction speeds, which is especially helpful for large datasets or backups.

If you are looking for the latest software improvements, was recently highlighted for significant performance gains:

: It provides the smallest file size but takes the most time and memory to process.

: Use zip -u archive.zip file.txt to replace an existing entry only if the version on your disk is newer.

In many command-line tools like Info-ZIP or Linux zip , the flag -9 specifies the highest possible compression level.

If your goal is to update an existing .zip file without recreating it, you can use specific flags: