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 UsingOpensc
See PivTool Points at file with public key used when generating a certificate request.
See PivTool Used with PIV cards during initialization.
See UsingOpensc
See UsingOpensc
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.