Mac OS X design your
on dock
make changes to your dock with spacers stacks
and visual effects
for example you can adjust its size
magnification level
when you hover the cursor over icons and
edged position
left bottom right additionally
there are too many minimisation effects to
choose from settings for toggling the
app launched bounce
doc auto hide and active application
indicators
but System Preferences doesn't tell the
whole story
because Apple hides a number of extra
options from the user interface
even so you can access them by using
Terminal
found in applications utilities
this command line tool enables us to
write to the docs preferences file
turning on or off hidden preferences and
further changing the nature of your doc
terminal is one of those apps that tends
to scare newcomers
but playing around with the dock is a
good introduction to use this tool
first copy the preferences
before editing your dock make a copy of its
preferences file
in Finder hold the Alt key and click go
in the top bar
from the drop down menu select library
to open a hidden user library folder
within
open the Preferences folder and find com
Apple dock
plist
now hold the Alt key again and
I'll to the desktop thereby making a
copy of it
can also store this file in a folder
elsewhere that also includes
the data the copy when was made
second
restore preferences
to restore your backup preferences copy the
file you just saved
in step one to your library's preferences
folder
then and for mountain lion
enter
killall Dock in terminal restarts the
old settings
on Mavericks type defaults read
in terminal then drag the file com.apple.plist 
from the library
to it
hit enter and then killall Dock to
restart
the Dock with your settings
third reverting the doc to defaults
reverting
the Dock to
defaults depends on your operating
system
in mountain lion trash the com.apple.dock.plist
from the Preferences folder and then use
killall Dock in terminal
on Mavericks delete the file from
terminal type
defaults delete com.apple.dock killall Dock
or to reset the dock to run app's with
defaults
type defaults right com.apple.dock
static.only -bool true
killall Dock
now click in this next video to learn on
how to customize the dock in Mac OS X
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