Cyclic Redundancy Check
You would use $crc to check to make sure a file has been copied correctly to a directory. i.e ftp server's usually use it to check that the file on your server is the same of that found on your computer.
here's an example
/testcrc {
/write -c mycrc.txt Hello there
/copy mycrc.txt mycrc2.txt
if ($crc(mycrc.txt) == $crc(mycrc2.txt)) /echo -a File copy successful
else /echo -a File copy failed
}
