best way to transfer databases from old version of PostgreSQL to new version

[Larz60+]

I haven't done this in a while, but just upgraded my PostgreSQL and now have to move all database stuff from the old version to the new.
I can't even remember the command string for dumping a database using psql or PgAdmin.
Anyone got a handle on this?

[Skaperen]

which OS are you running under? if Linux which distro? if Ubuntu, did you install package "postgresql-doc" yet? which old version of postgresql are you data files for?

[Larz60+]

OS for this instance, PostgreSQL version 9.~ to 10. windows 7 pro, I got it done using backup option, Seems that I had a migration tool last time, but that was a long time ago.

[Skaperen]

i recall a migration tool back around version 4 to version 5, but i haven't used it since.

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all my uses have been on Linux, Slackware then Ubuntu.