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60      Barracuda Backup Service Administrator’s Guide
You may charge a fee for the physical act of transferring a copy, and you may at your option offer 
warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based 
on the Program, and copy and distribute such modifications or work under the terms of Section 1 
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices stating that you changed the files and 
the date of any change.
b) You must cause any work that you distribute or publish, that in whole or in part contains or is 
derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties 
under the terms of this License.
c) If the modified program normally reads commands interactively when run, you must cause it, when 
started running for such interactive use in the most ordinary way, to print or display an announcement 
including an appropriate copyright notice and a notice that there is no warranty (or else, saying that 
you provide a warranty) and that users may redistribute the program under these conditions, and 
telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but 
does not normally print such an announcement, your work based on the Program is not required to 
print an announcement).
These requirements apply to the modified work as a whole. If identifiable sections of that work are 
not derived from the Program, and can be reasonably considered independent and separate works in 
themselves, then this License, and its terms, do not apply to those sections when you distribute them 
as separate works. But when you distribute the same sections as part of a whole which is a work based 
on the Program, the distribution of the whole must be on the terms of this License, whose permissions 
for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote 
it.
Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely 
by you; rather, the intent is to exercise the right to control the distribution of derivative or collective 
works based on the Program.
In addition, mere aggregation of another work not based on the Program with the Program (or with a 
work based on the Program) on a volume of a storage or distribution medium does not bring the other 
work under the scope of this License.
3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code 
or executable form under the terms of Sections 1 and 2 above provided that you also do one of the 
following:
a) Accompany it with the complete corresponding machine-readable source code, which must be 
distributed under the terms of Sections 1 and 2 above on a medium customarily used for software 
interchange; or,
b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge 
no more than your cost of physically performing source distribution, a complete machine-readable 
copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on 
a medium customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer to distribute corresponding source 
code. (This alternative is allowed only for noncommercial distribution and only if you received the 
program in object code or executable form with such an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for making modifications to it. For 
an executable work, complete source code means all the source code for all modules it contains, plus 
any associated interface definition files, plus the scripts used to control compilation and installation 
of the executable. However, as a special exception, the source code distributed need not include