Quick start:
Create file input.dat with 256KiB of random data:
dd if=/dev/urandom of=input.dat bs=512 count=512
Encode file input.dat to a hundred chunk files, each of 5380 bytes in size:
./encode input.dat 5380 chunk{00..99}.cpf
Output should be CPF(100, 49), which means we only need any 49 chunks of the 100 encoded.
Randomly delete (erase) 51 chunk files to only keep 49:
ls chunk*.cpf | sort -R | head -n 51 | xargs rm
Decode output.dat from remaining chunk files:
./decode output.dat chunk*.cpf
Compare original input.dat with output.dat:
diff -q -s input.dat output.dat