```batchfile
if %sentinel% NEQ __sentinel__ exit

call %tmp%\wget_and_install.bat http://downloads.sourceforge.net/sevenzip 7z465.msi %base_dir%\7z
```

Update 7zip to version 9.20
user
```batchfile
if %sentinel% NEQ __sentinel__ exit

call %tmp%\wget_and_install.bat http://downloads.sourceforge.net/sevenzip 7z920.msi %base_dir%\7z
```
assistant