ECHO.
ECHO ---------------------------[7-Zip - System Settings]---------------------------

ECHO.
ECHO Set 7-zip file extension associations...
SETLOCAL
SET SC="HKLM\SOFTWARE\Classes
SET Extn=001-9 7z-0 arj-4 bz2-2 bzip2-2 cab-7 cpio-12 deb-11 dmg-17 fat-21 gz-14 gzip-14 hfs-18 iso-8 lha-6 lzh-6 lzma-16 ntfs-22 rar-3 rpm-10 squashfs-24 swm-15 tar-13 taz-5 tbz-2 tbz2-2 tgz-14 tpz-14 txz-23 vhd-20 wim-15 xar-19 xz-23 z-5 zip-1
FOR %%j IN (%Extn%) DO (
        FOR /F "tokens=1,2 delims=-" %%A IN ("%%j") DO (
        REG ADD %SC%\.%%A" /ve /t REG_SZ /d "7-Zip.%%A" /f 1> NUL
        REG ADD %SC%\7-Zip.%%A" /ve /t REG_SZ /d "%%A Archive" /f 1> NUL
        REG ADD %SC%\7-Zip.%%A\DefaultIcon" /ve /t REG_SZ /d "%ProgramFiles%\7-Zip\7z.dll,%%B" /f 1> NUL
        REG ADD %SC%\7-Zip.%%A\shell\open\command" /ve /t REG_SZ /d "\"%ProgramFiles%\7-Zip\7zFM.exe\" \"%%1\"" /f 1> NUL
    )
)
ENDLOCAL