A_SYB_LOGIN indicates the user name under which you want to connect to the database system.
Example
To connect to the database with the user name MYNAME, specify:
A_SYB_LOGIN MYNAME
in the runtime configuration file.
If A_SYB_LOGIN is not set, on Windows the runtime uses the value of your USER environment variable as your Sybase login name. On UNIX systems, the runtime uses your UNIX login name as your Sybase login name. For this automatic login to succeed, you must have set up a user with the same name as your computer login name.
See also
A_SYB_PASSWD runtime configuration file variable
Section E.4.1, "Acu4GL for Sybase: Setting Up a User Account"