You can set different environment variables to change the behavior of OpenSC.
The cache directory is set to $HOME/.eid/cache/ on Unix.
Specify an alternative opensc.conf file.
See Using OpenSC
Specify an driver, that will be used (the same behavior as force_card_driver configuration option in opensc.conf ).
See PivTool Points at file with public key used when generating a certificate request.
See PivTool Used with PIV cards during initialization.
See Using OpenSC
See Using OpenSC
Is used to know if the terminal supports color or not. Supported color terminals are: “linux”, “xterm”, “Eterm”, “rxvt”, “rxvt-unicode”
The cache directory is set to $USERPROFILE/eid-cache/ on Windows.