I don't use application. I use "ls" command from unRAID server.
Is there any application I should use?
The only task that I want to use is to delete a file from unRAID server since I can not delete it from mac side whenever there is an error in copying.
This means that any application that capable of showing unicode from unRAID would be fine with me.
You stated that you copy files from your MAC to unRAID. Are you using file sharing for that (SMB, AFP or NFS) or perhaps a FTP application (I presume not).
Using the supported file sharing methods of unRAID, foreign characters (=UTF- encoding is preserved. This assumes that your MAC is also supporting UTF-8 (unicode).
I am using SMB now and there is no problem of unicode from mac side. Only problem is when there is an error in copying and I can not delete it from mac.
Only way is to delete it from unRAID side and the unicode is not supported from unRAID side. That is the problem!