cchian
26th August 2002 18:48 UTC

Checking the CRC value of a file
I would like to check if an installed file is exactly the same as another one by checking its CRC value, is this possible?

Thanks

kichik
26th August 2002 18:52 UTC

It is not possible with basic NSIS commands but you can always create an external DLL to do the job. Have a look at crc32.c, it contains the core of the NSIS CRC mechanism.

cchian
26th August 2002 19:04 UTC

Thanks Kichik, unfortunately I wouldn't know where to start. Maybe someone has already written one and can share it?

kichik
26th August 2002 20:56 UTC

Try searching for a command line md5sum for Windows. It does the same thing as CRC, so you won't have to write any program.

cchian
27th August 2002 19:34 UTC

I will give it a try, thanks.