tar

Show contents of the package:
root# tar -tzf archiv.tar.gz

Extract files here:
root# tar -xzf archiv.tar.gz

Extract only some file by mask:
root# tar -xzf archiv.tar.gz "*.log"

Extract to a directory:
root# tar -xzf archiv.tar.gz -C dir



Show contents of the bzip2 package:
tar -tjf archiv.tar.bz2

Extract files here:
root# tar -xjf archiv.tar.gz