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installation directory layout

PostgreSQL is typicality installed to /usr/lib/postgresql/
the same directory structure is the same both on windows and Linux.,
now we will discussed the content of installation 

bin folder

here you will find all PostgreSQL utility files such as initdb a& bg_ctl

data

the folder is located in default cluster and might change depend on if there multilabel cluster created , but by default its located in /var/lib/postgresql/13/main

here you will find all data related to database and the configuration file for the cluster 

log folder

the log of the PostgreSQL is very important it can support you to troubleshoot the status of PostgreSQL 

the log are typically stored in below path
/var/log/postgresql/