diff -ruN asymptote-1.29-orig/settings.cc asymptote-1.29/settings.cc
--- asymptote-1.29-orig/settings.cc	2007-05-19 18:25:56.000000000 +0100
+++ asymptote-1.29/settings.cc	2007-06-16 21:16:06.000000000 +0100
@@ -72,11 +72,11 @@
 bool msdos=false;
 const char *HOME="HOME";
 const char pathSeparator=':';
-string defaultPSViewer="gv";
+string defaultPSViewer="evince";
 #ifdef __APPLE__
 string defaultPDFViewer="open";
 #else  
-string defaultPDFViewer="acroread";
+string defaultPDFViewer="evince";
 #endif  
 string defaultGhostscript="gs";
 string defaultDisplay="display";