cksum

CRC checksum

low risk

interactive breakdown — edit the command and press Explain
$ 
What it does

POSIX CRC; not cryptographic. See the flags and examples below, and run `man cksum` for the full reference.

Examples
cksum fileCRC and size · explain & risk-check →
Related
sha256sum
Open the full explainer →More in Text Processing

Reference text is hand-written and may be incomplete — check man cksum for your version. Test destructive commands on a non-production system first.