diff --git a/.bash_aliases b/.bash_aliases
index 805db05..a96f051 100644
--- a/.bash_aliases
+++ b/.bash_aliases
@@ -1,3 +1,12 @@
+theos=$(uname -s)
+
+case $theos in
+    "Darwin" )
+        alias ls='ls -G';;
+    "Linux"  )
+        alias ls='ls --color=auto';;
+esac
+
 alias grep='grep --color'
 alias l='ls -lhatr'
 #alias ls='ls --color=auto'
@@ -8,19 +17,18 @@ alias gdp='git diff --color HEAD^ HEAD'
 alias gl='git log --pretty=format:"%Cgreen%h %Creset %s %Cgreenby %an (%ar) %Cred %d" --graph'
 alias gdc='git diff --color'
 alias gst='git status'
+alias grp='git remote prune origin'
 
 # export standard terminal for remote connections
 #alias ssh='export TERM=xterm && ssh'
 
-if [ $(which ncal >/dev/null 2>&1) ]; then
-  alias cal='ncal -b -M -3'
-else
-  alias cal='cal -m -3'
-fi
-
 alias hexdump='hexdump -c'
 
 alias pwgen='pwgen -B -s'
 
 # open multiple files in tabs
 alias vim='vim -p'
+
+if [ $theos == "Darwin" ]; then
+  alias flushdns='sudo killall -HUP mDNSResponder'
+fi