## DESCRIPTION

db.login sets login parameters such an user name and optionally also a password, a hostname or a port for the connection to the selected database through the DB driver.

## NOTE

Options host and port are related to only SQL database backends like PostgreSQL, MySQL or ODBC.

Note that the passwords are stored in a hidden, unencrypted file in the user account, specifically

- in the 'home' directory, i.e. `$HOME/.grass7/dblogin` (Unix-like systems)
- `%APPDATA%/GRASS7/dblogin` (MS-Windows)

Only the file owner can access this file.

## EXAMPLES

Only username specified (assuming locally accessible PostgreSQL DB without password):

    db.login driver=pg database=mydb

Username, password and hostname specified (note that the command lines history will store the password in this way):

    db.login driver=pg database=mydb user=bacava password=secret host=db.example.com

Username and empty password specified:

    db.login driver=pg database=mydb user=bacava password=""

## SEE ALSO

db.connect, db.test, db.tables

SQL support in GRASS GIS

## AUTHOR

Radim Blazek
Support for hostname and port by Martin Landa, OSGeoREL, Czech Technical University in Prague, Czech Republic (GRASS 7.1)