I'm rather intrigued about the following two points:
1. tar command
can be found instructions on Web pages?
Which is better - or no - before the xzvf string?
Both seem to work fine (tested with firefox and thunderbird tar.gz files).
2. On the mozilla.org web site (mozilla suite section) they have these instructions for the tar.gz file
gunzip -dc moz*.tar.gz | tar -xvf -
Is this quite the equivalent of the simpler:
Both seem to have the same effect.
Are there old-fashioned commands or signs that are no longer needed now?