Install Firebird 2.5.9 on Ubuntu 18.04

Go to https://www.ibphoenix.com/download/firebird/25 Download FirebirdSS-2.5.8.27089-0.amd64.tar.gz and extract on terminal write

cd FirebirdSS-2.5.8.27089-0.amd64
./install.sh
service –status-all

you need to verify if exists firebird in list of services on terminal write

chmod 777 \localpach\YOURDB.FDB

I used on Ubuntu server Lts 18.04.02