CopyAndVerify

This is a simple program to copy files or directories and verify the copied file with hashes. Hash is saved in .hash file compatible with md5sum(hashSUM). It has a gui and work on Linux and windows (the script should work even on Mac). Hash is computed while reading so sources file are read only once. The executables have been created using pp : it creates an executable similar to an autoextract-zip with the script, the perl engine and all libraries.
I'm using it under linux to copy GigaBytes files from ntfs internal hd to ntfs external hd with an old atom eepc with 8.5MB/sec speed : is it good? With more powerful pc speeds are 3 times better.
Can manage very long path (>260 char) under windows (under linux is default : magic linux!) in main windows and in primary multi-file-dir selector.