[OS X TeX] About ~/Library/texmf/

[Anthony JACOB]

Hi,

I wonder about ~/Library/texmf/, I haven't this directory and I think I 
need it to install some personnal packages or packages which are not 
include in TeXLive. (I use Gerben's TeXLive 2005). In fact, I use some 
time some modified *.cls (article, report and book) and I would like to 
install them in ~/Library/texmf/ in order to not have always to put 
*.sty *.cls in the same repertory as my *.tex.

Is it possible to sort them by type of class ? i.e. to have a repertory 
wiht all class based on article.cls, a other for class based on book.cls 
etc ...

My last question is about pictures for titlepage. For example, there is 
some pictures I include in my papers very often, and I would put them in 
one directory in ~/Library/texmf/ but I don't you where and how specify 
to each class to look the pictures.
For example can I give as argument {~/Library/texmf/.../.../logo} to 
\graphicspath ?

Finally, how can I have a "good" ~/Libray/texmf/ and where have I to put 
my personnal class !?

Thanks in advance,

Anthony
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