SHA1SUM

From The System Administrator Zone


sha1sum is a computer program which calculates and verifies SHA-1 hashes.

SHA1SUM on OS X

openssl sha1 filename
$ openssl sha1 Fedora-10-x86_64-DVD.iso 
SHA1(Fedora-10-x86_64-DVD.iso)= f1e5ae7db6a1ba227de7294c4112385922388648
$