simple script to backup PostgreSQL database [duplicate] - postgresql

Question

This question already has answers here:
How do I specify a password to 'psql' non-interactively?
(11 answers)
Closed 8 years ago.
Hello I write simple batch script to backup postgeSQL databases, but I find one strange problem whether the pg_dump command can specify a password?
There is batch script:
REM script to backup PostgresSQL databases
#ECHO off
FOR /f "tokens=1-4 delims=/ " %%i IN ("%date%") DO (
SET dow=%%i
SET month=%%j
SET day=%%k
SET year=%%l
)
SET datestr=%month%_%day%_%year%
SET db1=opennms
SET db2=postgres
SET db3=sr_preproduction
REM SET db4=sr_production
ECHO datestr is %datestr%
SET BACKUP_FILE1=D:\%db1%_%datestr%.sql
SET FIlLENAME1=%db1%_%datestr%.sql
SET BACKUP_FILE2=D:\%db2%_%datestr%.sql
SET FIlLENAME2=%db2%_%datestr%.sql
SET BACKUP_FILE3=D:\%db3%_%datestr%.sql
SET FIlLENAME3=%db3%_%datestr%.sql
SET BACKUP_FILE4=D:\%db14%_%datestr%.sql
SET FIlLENAME4=%db4%_%datestr%.sql
ECHO Backup file name is %FIlLENAME1% , %FIlLENAME2% , %FIlLENAME3% , %FIlLENAME4%
ECHO off
pg_dump -U postgres -h localhost -p 5432 %db1% > %BACKUP_FILE1%
pg_dump -U postgres -h localhost -p 5432 %db2% > %BACKUP_FILE2%
pg_dump -U postgres -h localhost -p 5432 %db3% > %BACKUP_FILE3%
REM pg_dump -U postgres -h localhost -p 5432 %db4% > %BACKUP_FILE4%
ECHO DONE !
Please give me advice
Regards Mick

Answer 1

edited to reflect information in comments
There is no option to feed the password form command line. You need to include the -w or --no-password switch and create a file that will contain the password for the connection. It is a text file in the form
hostname:port:database:username:password
By default this file will be readed from %APPDATA%\postgresql\pgpass.conf, but its location can be changed setting the environment variable PGPASSFILE to the path to the file to use.
You can find more information in the product documentation