I've tried and the output is:
So it seems, that something is not good.~ # /usr/bin/smbpasswd admin
/usr/bin/smbpasswd: error while loading shared libraries: /usr/local/zy-pkgs/lib /libiconv.so.2: file too short
~ # /usr/bin/smbpasswd admin "my password was here"
/usr/bin/smbpasswd: error while loading shared libraries: /usr/local/zy-pkgs/lib/libiconv.so.2: file too short
I used Midnight Commander and checked the file /usr/local/zy-pkgs/lib/libiconv.so.2 - it has 0 bytes.
I tried to view it, and MC coldnt open. So I copied it to Public folder and opened via Total Commander and it's emty.