is checksum necessary for tar, gzip, zip?

carolus · 08-23-2009, 04:22 PM

Is checksumming necessary when archiving or communicating tar, gzip, and zip files, or do they have built-in checksums? I can't find clear answers in the manpages. For example, how much testing is actually done by gzip --test?

gilead · 08-23-2009, 07:01 PM

As far as I know they don't do checksumming. This is something you can do with md5sum or sha1sum yourself:

Code:

sha1sum filename > filename.sha1
md5sum filename > filename.md5

Is that what you were looking for, or were you interested in checksumming the individual files within the archive?