编写一个登录postgreSQL的shell脚本

#!/bin/bash

echo "Enter the PostgreSQL username: "
read username

echo "Enter the PostgreSQL password: "
read -s password

echo "Enter the PostgreSQL database name: "
read database

# Log into PostgreSQL using the provided credentials
psql -U $username -d $database -c "SELECT version();"

# Check if the login was successful
if [ $? -eq 0 ]
then
echo "Login successful"
else
echo "Login failed"
fi

# End of script