cksum_file

[Eric Jacklin]

Hi

What is cksum_file is for ? Incase if this file is not there or it will not get restored back then will it be create any isuees ?

[Steven E. Protter]

Shalom,

checksum is used to make sure a file, like for example an executable is not changed while being tranferred across a network.

If the md5 checksum is the same on the local system after you download it from the internet, then you are certain it has not been altered.

SEP

[Eric Jacklin]

Actully, After a system crashed i resoted data from tapes through DP client.

So Data was copied successfully but the checksum files don't so will it be create any problems

[OldSchool]

i may have misunderstood you. are you saying you had something called "cksum_file", but after a restore you don't?

if so:

never heard of "cksum_file", its not part of the std hp-ux system.

as to what issues it's absence would cause, their is no way of knowing, unless you know who (or what software product) installed it.

std checksum tool is cksum.

[Ralph Grothe]

Checksum files are serving the purpose for verifying that some other file(s) which the checksum(s) relate to are consistent and haven't been tampered with.
Various checksum algorithms exist where the probability of so called collisions (viz. that the checksum algorithm excercised on a different file that however produces the same checksum) is close to non-existent (in theory a collision would render the algorithm useless for this purpose, but it happened).
Therefore checksums also have been used by some intrusion detection systems.
Unless your host is under such a regime (but then those checksums wouldn't be kept in writable filesystems) the absence of such files shouldn't do any harm.

[Scott Lindstrom_2]

We run HP's Mission Critical Monitoring product; this software puts this file in each file system. We don't worry about recovering it; it gets recreated.

Scott