Dear Postgresql Specialists I am failing to update the password of the postgresql user from within a Linux installation script run by root: # su - postgres -c echo "ALTER USER postgres WITH PASSWORD 'newpassword';" | psql -U postgres template1 psql: FATAL: Ident authentication failed for user "postgres" In contrast, there is no problem with the same command issued in psql interactively: # su postgres $ psql template1 template1=# ALTER USER postgres WITH PASSWORD 'newpassword'; ALTER USER \q $ exit # The client authentication configuration file pg_hba.conf is in its original state. I would appreciate your help very much. Thanks. Bernard ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match