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