# get extra fields for index args encrypt.zip get_extra 0 0 l get_extra 0 0 c get_extra 0 1 l get_extra 0 1 c get_extra 0 2 l return 1 file encrypt.zip encrypt.zip encrypt.zip stdout Extra field 0x5455: len 9, data 0x033dda4c444dda4c44 stdout Extra field 0x5455: len 5, data 0x033dda4c44 stdout Extra field 0x7855: len 4, data 0x64001400 stdout Extra field 0x7855: len 0 stderr can't get extra field data for file at index 0, extra field 2, flags 256: No such file