tar is used to create a Tape ARchive. ( tar is from the old unix era) The resulting file is known as a tarball. A tar ball concatenates files to a a sin get the files out of a tarball, you can extract a tarball using
tar -xvf something.tar
To create a tar archive , the following command can be used.
tar -c /home/mydir > mydir.tar
tgz and tar.gz
If the tarball has also been gzipped (compressed), the file will be named tar.gz or tgz .You can use the following command to extract it.
tar -xvfz something.tar.gz
If you want to create a tgz as below.
tar czvf myfolder.tar.gz myfolder/
A tar.bz2 uses bzip2 compression on a tarball. Generally the size will be less that a tar.gz file .If you have a .tar.bz2 file , issue this command: ( You need bzip2 installed)
tar -xvjf file-1.0.tar.bz2If you want to create a tar.bz2 as below.
tar cjvf myfolder.tar.bz2 myfolder/