Sometimes extracting a zip file using the unzip command may result in the “skipping: filename.zip need PK compat. v4.5″ error message.
# unzip filename.zip Archive: filename.zip skipping: filename.zip need PK compat. v4.6 (can do v2.1)
This is due to the file been compressed with the latest version of PKZIP which the unzip command cannot handle. The solution is to install p7zip package which can handle the files compressed using PKZIP.
Download the latest version of p7zip:
# wget http://downloads.sourceforge.net/project/p7zip/p7zip/9.20.1/p7zip_9.20.1_x86_linux_bin.tar.bz2?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fp7zip%2Ffiles%2Fp7zip%2F9.20.1%2Fp7zip_9.20.1_x86_linux_bin.tar.bz2%2Fdownload&ts=1390605043&use_mirror=garr
Extract the file
# tar -jxf p7zip_9.20.1_x86_linux_bin.tar.bz2
goto the extracted directory and run the installer
This will install the ’7za’ command on your server using which the zip file can be extracted
# 7za x filename.zip Processing archive: filename.zip Extracting filename Everything is Ok