Create Tar file and unpacking of Tar File.

Create TAR File

$ tar -cvf archivename.tar name_of_file

     v - provides a descriptuion of archived contents (optional)

     c - to create an archive

     f -  to specify a name for the archive

     archivename.tar -- name given to the archive

     name_of_file    -- name of folder or directory to be archived.

e.g tar -cvf tech_st.tar tech_st

Unpacking the TAR File

 $ tar -xvf archivename.tar

      v - provides the contents of the unpacked files

      x - to extract files

      f - designate the archive containing the files.

      arhivename.tar - the name of the archive to retrieve.

  e.g $ tar -xvf tech_st.tar

Create zipped tar ball

     # tar -cvf temp.tar tmp

     # /usr/contrb/bin/gzip temp.tar

     This creates temp.tar.gz

      You can then copy to any directory you want.

 To Uncompress zipped tar ball

     # cd /directory_you_want

     # /usr/contrib/bin/gunzip temp.tar.gz

     # tar -xvf temp.tar

     # ll tmp