tar(1) -xv -C hw1_get_started -f hw1_get_started.tgz
The GNU version of the tar archiving utility
-x, --extract, --get
      extract files from an archive
-v, --verbose
      verbosely list files processed
-C, --directory DIR
      change to directory DIR
-f, --file ARCHIVE
      use archive file or device ARCHIVE
source manpages: tar