Added alias for taking average of numbers

bashrc

@@ -92,6 +92,7 @@ alias c='xclip -i -selection clipboard'
 alias vimdiff='vim -d -c "colorscheme desert"'
 alias ydiff='diff -y -W 196 --left-column'
 alias v='gpicview'
+alias avg="awk '{a+=\$1} END{print a/NR}'"
 
 function tm () {
     `which time` -f %e $* > /dev/null