can i install a non-.deb program?

[dwain]

i need a pdf viewer and editor.  i have used cabaret on opensuse before.  i
use cabaret on windows.  the package does not have a .deb extension on the
file.  can i still install this program?  it is for linux.

cheers,
dwain

-- 
"Fear of the devil is one way of doubting God.  " - Kahlil Gibran
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