Extracting archive file depends on the type.
Here goes the list of extracting/unzipping command for various archive types:
1> Unzipping .zip file
unzip filename.zip
2> Unzipping .tar file
tar -xvf filename.tar
3> Unzipping .tar.gz or .tgz file
tar -zxvf filename.tar.gz
tar -zxvf filename.tgz
4> Unzipping .gz file
gunzip file.gz
5> Unzipping .bz2 file
bunzip2 file.bz2
Let me know if you have any unzipping command for the new file type.
Thanks for reading.