First of all, hello there!!!

Well, I' ve got one question:
How may I get the size of the HD, I mean, wich command do I have to type?

Thanks in advance,

well you should list what os your useing because we all dont use the same os.

but you can try format.

Format? Really? Thanks... I'll try....

But I think "df" is better, don't you think?

Thanks a lot.

no.

df only shows you mounted filesystems. not the number of disks installed or any geomitry settings.

and df also shows you virtual filesystems, so i dont know how you would count that since its not a disk at all, and what about network filesystems, those arent even installed on your machine but they could be mounted.

df:

Display free disk space.
With no arguments, `df' reports the space used and available on all currently mounted filesystems (of all types). Otherwise, `df' reports on the filesystem containing each argument file.

That what I need... Thanks.

...but don't woory, I'll try your hint, maybe it works better.

your original question was "How may I get the size of the HD, I mean, wich command do I have to type?"

df will not provide the answer you were asking for, but if you wanted to know how much space you have on _mounted_ filesystems then yes df would be the command your looking for.

mounted disks and complete disk geomitry (sp) are 2 differant things.

but as i said before df will showyou disk/virtual/networked filesystem space useage.

either way you got what you were looking for.

If you ever want to get the size of hard disk on solaris try this

iostat -En