Once in a while, I do find old windows backups with some special wrong encoding on german umlauts (represented as question mark). Which in general means – call everything with quotes on the shell, or convert them all to utf-8.
Luckily, someone else already made a handy tool for that, allowing to specify input/output encoding as well as recursively.
# apt-get install convmv
First test which file names would be transformed in the current directory.
$ convmv -f latin1 -t utf-8 -r .
Then add –notest as suggested and watch the perfect new encoding 🙂
$ convmv -f latin1 -t utf-8 -r . --notest