Yes, to perform an immediate login you have to navigate to Installation directory and use the following start parameters −
-h Host name
-n Instance number
-u User name
User name with special characters should be enclosed in double quotations (“”).
hdbstudio.exe -h hanademo -n 03 -u HANAADMIN
hdbstudio.exe -h hanademo -n 03 -u "&hanatest"
hdbstudio -h hana -n 03 –u HANAADMIN
hdbstudio -h hana -n 03 -u "&hana"
open -a /Applications/sap/hdbstudio.app --args -h hana -n 03 -u HANAADMIN
open -a /Applications/sap/hdbstudio.app --args -h hana -n 03 -u "&hana"
Once you run above from command line, this will open HANA Studio. If you are prompted to enter password you enter password and you are logged in.