Quote

[admin@doorgunner ~]$ bzip2 test.txt
[admin@doorgunner ~]$ mv test.txt.bz2 test.txt.zip
[admin@doorgunner ~]$ unzip test.txt.zip
Archive: test.txt.zip
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
unzip: cannot find zipfile directory in one of test.txt.zip or
test.txt.zip.zip, and cannot find test.txt.zip.ZIP, period.
[admin@doorgunner ~]$