tar do not overwrite files
It is as simple as using the "-k" option for:
-k, --keep-old-files don't replace existing files when extracting
--keep-newer-files don't replace existing files that are newer than
their archive copies
eg.
tar zxvfk sometar.tar.gz
Tags:
tar, overwrite, filesit, quot, existing, extracting, newer, archive, copies, eg, zxvfk, sometar, gz,