A password is visible in my psql prompt (by pushing up arrow to view previous inputted commands). So I would like to delete that entry from the psql client.

Other resources(1, 2) claim that psql client history is kept in is a ~/.psql_history file, however this file is simply not there. (it's not in .bash_history either)

So there must be another file where the history of psql prompt is kept, any ideas where?

I log in to my prompt like this sudo -u postgres psql my_db

Note: I am working on Ubuntu 12.04

postgresql psql
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