scripts/rvm in rvm-0.0.33 vs scripts/rvm in rvm-0.0.34

@@ -9,11 +9,11 @@
 #
 function __rvm_meta {
   rvm_meta_author="Wayne E. Seguin"
   rvm_meta_author_email="[e-mail]"
   rvm_meta_website="http://rvm.beginrescueend.com/"
-  rvm_meta_version="0.0.33"
+  rvm_meta_version="0.0.34"
   rvm_meta_updated="2009.09.04"
 }
 
 function __rvm_version { __rvm_meta ; echo "rvm $rvm_meta_version ($rvm_meta_updated) [$rvm_meta_website]" ; }
 
@@ -162,17 +162,27 @@
   fi
 
   if [ -s $rvm_install_path/default_user_gem_path ] ; then
     rvm_default_user_gem_path=`cat $rvm_install_path/default_user_gem_path`
   else
-    ruby -r rubygems -e "puts Gem::default_path.compact.first" > $rvm_install_path/default_user_gem_path
+    which ruby > /dev/null
+    if [ $? -ne 0 ] ; then
+      __rvm_log "info" "System ruby not found, assuming no system installed ruby."
+    else
+      ruby -r rubygems -e "puts Gem::default_path.compact.first" > $rvm_install_path/default_user_gem_path
+    fi
   fi
 
   if [ -s $rvm_install_path/default_system_gem_path ] ; then
     rvm_default_system_gem_path=`cat $rvm_install_path/default_system_gem_path`
   else
-    ruby -r rubygems -e "puts Gem::default_path.compact[1] || Gem::default_path.compact.first" > $rvm_install_path/default_system_gem_path
+    which ruby > /dev/null
+    if [ $? -ne 0 ] ; then
+      __rvm_log "info" "System ruby not found, assuming no system installed ruby."
+    else
+      ruby -r rubygems -e "puts Gem::default_path.compact[1] || Gem::default_path.compact.first" > $rvm_install_path/default_system_gem_path
+    fi
   fi
 
   if [ -s $rvm_install_path/default_system_ruby ] ; then
     default_system_ruby=`cat $rvm_install_path/default_system_ruby`
   else
@@ -247,11 +257,11 @@
 #
 function __rvm_run {
   log_file_name="1" ; shift
   command="$*"
   if [ $rvm_debug ] ; then __rvm_log "debug" "Executing: $command" ; fi
-  eval "nice -n $rvm_niceness $command" > $rvm_ruby_log_path/log_file_name.log 2> $rvm_ruby_log_path/log_file_name.error.log
-  if [ $? -gt 0 ] ; then __rvm_log "error" "There was an error, please check $rvm_ruby_log_path/log_file_name.error.log" ; popd 2> /dev/null ; return 1 ; fi
+  eval "nice -n $rvm_niceness $command" > $rvm_ruby_log_path/$log_file_name.log 2> $rvm_ruby_log_path/$log_file_name.error.log
+  if [ $? -gt 0 ] ; then __rvm_log "error" "There was an error, please check $rvm_ruby_log_path/$log_file_name.error.log" ; popd 2> /dev/null ; return 1 ; fi
   unset log_file command
 }
 
 function __rvm_install-source {