If you are running an RPM based distribution, you can check for the existence of pre-installed packages using the <command>rpm</command> command as follows: <command>rpm -qa | grep postgresql</command>
Se state utilizzando una distribuzione basata su RPM, potete verificare la presenza di pacchetti preinstallati utilizzando il comando<command>rpm</command>con la seguente sintassi:<command>rpm -qa | grep postgresql</command>