CKDIR(UCB) — UNIX Programmer’s Manual

NAME

ckdir − checksum the files in a directory to guard against/check for corruption

SYNOPSIS

ckdir [ −c ] name ...

DESCRIPTION

Ckdir helps guard against files becoming corrupted. If invoked with the −c flag it computes a file check.sum for each specified directory (‘.’ default) which contains for each plain file in the directory a (simple-minded) checksum on its contents. Ckdir can then be run (without the −c option) to check that the files haven’t changed.

FILES

check.sumchecksum data

BUGS

The checksum files might better be called ‘.checksum’ but then it wouldn’t be as obvious when they are missing.

Needs a −r flag for running a checksum on the whole filesystem from cron.

Should have an option to give only files which have been “impossibly” modified; that is files where the times from stat and the change to the check.sum data cannot be reconciled.

Doesn’t comprehend special files.