Hello,
Installed postgresql-13 from Debian repos.
postgres@roblaptop:/usr/lib/postgresql/13/bin$ initdb -V
initdb (PostgreSQL) 12.4 (Debian 12.4-1)
PG_VERSION is initialised as 12.
However,
postgres@roblaptop:/usr/lib/postgresql/13/bin$ createdb -V
createdb (PostgreSQL) 13.0 (Debian 13.0-2)
pg_ctl (PostgreSQL) 12.4 (Debian 12.4-1)
pg_dump (PostgreSQL) 13.0 (Debian 13.0-2)
Debian OS:- Linux roblaptop 5.8.0-2-amd64 #1 SMP Debian 5.8.10-1 (2020-
09-19) x86_64 GNU/Linux
This is just a development box.