Is it safe to keep all files on a server with CHMOD 777?

Question

linux

Hello, I accidentally made a mistake when editing permissions and gave all files permissions 777, the owner of root.
How safe is it to leave it like that? What will be the consequences? And how can I fix everything without losing data?
Used by Debian, apache, php, mysql and other modules to maintain the project.

Answer 1

If everything was installed via apt, then you can try the following command:
find /var/cache/apt/archives -name '*.deb' -print0 | sudo xargs -0 dpkg -Gi This will
reinstall the latest packages from the apt cache.