How to convert a file of format tar.gz to tar.bz2?

Question

Like the title says, how do I do this conversion from the Linux console?

Answer 1

You can combine the two commands as following:

gunzip < file.gz | bzip2 > file.bz2

This will start two processes in parallel, gunzip reading the file.gz file and outputting the non-compressed stream to bizp2 to re-compress it into file.bz2.

This process does not create intermediate files, you'll need to remove the file.gz afterwards (rm file.gz).