Start psql without enter password ·

It ’s so inconvenience when everytime you want to access psql, you need to enter your so long password

Today, i learnt how to remove this step by using environment variable PGPASSWORD

export PGPASSWORD="<enter_your_password_here>"
exec psql -h <host_name> -d <database_name> -p <port> -U <user_name> "$@"

You even can write a script to make it fast. I name it connect_db

#!/usr/bin/env sh
prog=connect.db
case "$1" in
    <db1>)
        export PGPASSWORD="<enter_your_password_here>"
        exec psql -h <host_name> -d <db1> -p <port> -U <user_name> "$@"
        ;;
    <db2>)
        export PGPASSWORD="<enter_your_password_here>"
        exec psql -h <host_name> -d <db2> -p <port> -U <user_name> "$@"
        ;;
    *)
        echo "USAGE $prog {<db1>|<db2}"
        ;;
esac

If you want to automate every feed on prompt, you can using some expect library.

With python, we can look at pexpect

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