Connecting to Oracle in Unix shell

[Satya3183]

Is this the command to connect oracle from unix?
sqlplus -s username/password.
Then what is the -S here...????

[rski]

-s is a silent mode.

You will probably want to use -s if you want to run some sql scripts or you want to execute sql commands in shell script.
Just try to connect using sqlplus with -s and without and you will see the difference.