[1048] ~/downloads % tar tfz jldapunx_all.2004.09.15.tar.gz
tar: Unrecognized archive format: Inappropriate file type or format
<1> [1049] ~/downloads % file jldapunx_all.2004.09.15.tar.gz 
jldapunx_all.2004.09.15.tar.gz: Zip archive data, at least v2.0 to extract
[1050] ~/downloads % mv !$ jldapunx_all.2004.09.15.zip
mv jldapunx_all.2004.09.15.tar.gz jldapunx_all.2004.09.15.zip
[1051] ~/downloads % unzip -l !$
unzip -l jldapunx_all.2004.09.15.zip
Archive:  jldapunx_all.2004.09.15.zip
  Length     Date   Time    Name
 --------    ----   ----    ----
 28282880  10-05-04 21:58   jldapunx_all.2004.09.15.tar
 --------                   -------
 28282880                   1 file