1-step installations scripts to install Firebird 5, 4, 3, 2.5 for all popular Linux distros with OS optimizations were updated.

1) Added support for RED OS 7 and 8 distributions;
2) Added support for Astra Linux SE 1.7 and 1.8 distributions;
3) Improved compatibility with Centos Firewall;
4) Made version filters less restrictive.

GitHub (don't forget to give a star): https://github.com/IBSurgeon/firebirdlinuxinstall