ed -> sed; conciser and those lines were for *GNU* ed

neetbsd.sh

@@ -46,10 +46,8 @@ else
   cd /tmp
   tar xfv xdiskusage-1.60.tgz # Extract
   cd xdiskusage-1.60
-  ed xdiskusage.C <<'END' # ed(1) replacing 'APPLE' with 'NetBSD'
-s/defined(__APPLE__)/defined(__NetBSD__)/g
-wq
-END # xdiskusage now acts like the FreeBSD version - probably hacky, but it seems functional
+  sed -i's/(__APPLE__)/(__NetBSD__)/g' xdiskusage.C <<'END' # sed replacing 'APPLE' with 'NetBSD'
+  # ^ xdiskusage now acts like the FreeBSD version - probably hacky, but it seems functional
   # Configure, compile, install, clean
   ./configure && make CPPFLAGS=-I/usr/pkg/include -I/usr/X11R7/include && su root -c 'make install clean'
   # .desktop