Errors should go to stderr

[nfsec]

Hello,

First of all, a very cool tool.
But I think it would be a good idea if errors were redirected to stderr. In this way, we will be able to save file with pure reports to and later process data.

$ ./sandfly-filescan -dir / -elf -csv -entropy 7.7 > raport.csv 2> errors
$ cat raport.csv
kheaders.ko, /lib/modules/5.3.0-45-generic/kernel/kernel/kheaders.ko, 8.00, true
error walking directory (/proc/8705/fd/3) inside search function
$ cat errors
$

Thanks for the note. We'll look into putting in your request in the next update.