Install cksfv by entering the following commands in the terminal:
sudo apt update sudo apt install cksfv
sfv checker and generator
SFV, Simple File Verification, uses crc32 checksums to verify that files are intact. cksfv automates the task of generating and checking .sfv sheets. For integrity, md5 checksums are probably a better alternative, but sfv is a widely used method for verification on the USENET binary newsgroups and other places.