[sane-devel] Umax 2000P and SANE

[Happy House]

Dear All,

	I have recently discovered that my Umax 2000P (parallel port) Scanner can be used with SANE in linux.  I have Redhat 7.1 I recently wen to the http://umax1220p.sourceforge.net/ for information on using my scanner with SANE.  I have downloaded all of the files needed sane-1.0.5-backends.tar.gz
 and frontends and even the xsane source. But I do not know how to "patch" my backends directory like the page: http://umax1220p.sourceforge.net/install.html	 

has told me.  All I get is a 

patch 
unknown command

Is patch another package I need to download? If yes where?  If not, where did I go wrong?  I followed it all, downloaded sane-1.0.5-backends.tar.gz and put it in the sane backends directory, but when I run the 

    zcat umax1220p-2.3.gz | patch -p1 

 or

    patch <umax1220p-2.3 -p1 

I get the patch command not found?  what am I doing wrong?  

Can anyone can help or can point me in the right direction?  Thank you so much

sincere thanks and gratitude,
skkaw