How to Unpack a tar file on Windows?

On Windows:
You can download a simple command line tool to do this.
You can download the tool from here

Usage can be found on the website but pasting it here too for convenience:

C:\>TarTool.exe
Usage :
C:\>TarTool.exe sourceFile destinationDirectory
C:\>TarTool.exe D:\sample.tar.gz ./
C:\>TarTool.exe sample.tgz temp
C:\>TarTool.exe -x sample.tar temp
TarTool 2.0 Beta supports bzip2 decompression for files with extensions like tar.bz2 and .bz2.
TarTool -xj sample.tar.bz2 temp
or
TarTool -j sample.bz2

Download TarTool 2.0 Beta from here

Unpack a .txz file on Windows
Use the 7zip tool to unpack a .txz file on windows

On Linux:
You can use the bzip2 and tar combined to do this…
for ex: bzip2 –cd <tar.bz_fileName> | tar –xvf -
This will unpack the contents of the tar.bz file

Happy Un-Tar-ing