diff --git a/bashrc b/bashrc
index e0cb043..cc09812 100755
--- a/bashrc
+++ b/bashrc
@@ -176,9 +176,10 @@ null type pacmatic && {
     export PACMAN="pacmatic"
 }
 
-alias ubuntu-upgrade="sudo apt-get autoremove --yes && sudo apt-get update --yes && sudo apt-get upgrade --yes"
-alias arch-upgrade="sudo pacman -Syu"
-alias port-upgrade="sudo port selfupdate && sudo port upgrade outdated && sudo port uninstall leaves"
+null type apt-get && \
+    alias aupgrade="sudo apt-get autoremove --yes && sudo apt-get update --yes && sudo apt-get upgrade --yes"
+null type port && \
+    alias pupgrade="sudo port selfupdate && sudo port upgrade outdated && sudo port uninstall leaves"
 
 if iscygwin; then
     null type windate || alias windate="/c/Windows/System32/cmd.exe //c 'echo %DATE%-%TIME%'"
diff --git a/setup.sh b/setup.sh
index 999222f..afe2b88 100755
--- a/setup.sh
+++ b/setup.sh
@@ -58,6 +58,20 @@ git_config(){
     fi
 }
 
+mac_defaults(){
+    # add quit entry in menu
+    defaults write com.apple.finder QuitMenuItem -bool YES
+    # show full path on titlebar
+    defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES
+    # do not show desktop icons
+    defaults write com.apple.finder CreateDesktop -boolean false
+
+    killall finder
+
+    # disable dashboard
+    #defaults write com.apple.dashboard mcx-disabled -bool YES
+}
+
 gen_source_script(){
     # _gen_source_script file lines
     test $# -eq 2 || return 1