MD5CHECK 1 "21 February 1994"

Table of contents


md5check - check MD5 checksums of critical system files




md5check compares the MD5 checksums of several critical system files to a database of known good checksums. md5check will generate a report indicating which files did or did not match checksums in the database.

A failed match does not necessarily indicate the presence of a trojan binary, instead it simply means that the checksum was not found in the current checksum table. The file's authenticity should be verified against distribution media or local modifications.

A correct match indicates that the corresponding file is free from tampering.


The entries included in the checksum database do not represent complete coverage of all released versions of these files. In particular, checksum data for outdated patch releases is limited.