Install the ora2pgpro package using your package manager. Depending on your system, it can be one of the following:
apt-get: Debian, Ubuntu, Astra, AltLinux
dnf: Red Hat Enterprise Linux (RHEL) systems
and its derivatives: Red OS, Rosa
yum: older Rosa versions
zypper: SLES
In any case, specify the parameters for install ora2pgpro.