To initialize an application, Open Client and Open Server:
Use the SYBASE environment variable to determine the location of the Sybase installation directory.
Use the locale-specific POSIX environment variables LC_*, LANG, LC_ALL, and LC_COLLATE locales.dat file to determine what language, character set, and collating sequence the application uses.
Use the libtcl.cfg file to load the directory driver, security driver, and network (Net-Library) driver, as required.