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[PostgreSQL Linux] Remove installed PostgreSQL in opt dir

I installed PostgreSQL through the installation file, so the installation directory is /opt/PostgreSQL/10

I tried

sudo apt-get --purge remove postgresql*

but this did not work for me.

In my case uninstaller was under /opt/PostgreSQL/10, so I cd here and run

sudo ./uninstall-postgresql

and problem solved

Hope that will help you

I have consulted the workaround here

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