What is the M in tar Mcvf

[Micah]

Teo De Las Heras wrote:
> I looked through the man pages and online, but I can't find information on
> what the M is for in 'tar Mcvf'.  I constantly see this as a way to archive
> / backup files.
> 
> Teo

That's a gnu tar option, not a bsd tar option.  I did a google for gnu 
tar man and got http://www.die.net/doc/linux/man/man1/tar.1.html which 
will explain it.

HTH,
Micah