Note that having two Safari's in the dock is simple: just run
/Applications/Safari.app/Contents/MacOS/Safari in a terminal
Window. Those will share the same preferences and bookmarks
Although I am using Safari as the example here, this technique
can actually be applied to any Mac OS X application.
Why would you want to do this? Well, for one reason so that you
can have separate preferences or bookmarks. Another reason is
because of application crashes which take down all your open
Windows. For example, I often do things in Terminal that can crash
all my terminal sessions, but not if I keep separate instances of
Terminal open. You might want to do this with an Email application
to keep two totally separate accounts - there are all kinds of
The first step is to make an identical copy of Safari. We'll use
"ditto" for this because we may need to copy resource forks.
sudo ditto Safari.app Safari2.app
sudo mv MacOS/Safari MacOS/Safari2
Now we need to edit Info.plist. Basically, any place it says
Safari will be changed to Safari2. The most important change is
because that is your ~/Library/Preferences location, and we need
it to be different for these two versions. Here are the other
If you aren't sure whether something needs to be changed, leave
it alone and try running the app. If it works as you expect, then
you are fine.
One thing that won't change with Safari is its default home
page. That's because Safari looks instead in
~/Library/Preferences/com.apple.internetconfig.plist for that
Once this is done, you can run the new Safari2 and if you change
its preferences, that has no effect on the original Safari.
If this page was useful to you, please help others find it:
More Articles by Tony Lawrence
- Find me on Google+
Have you tried Searching this site?
Unix/Linux/Mac OS X support by phone, email or on-site:
This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more. We appreciate comments and article submissions.
Publishing your articles here
Jump to Comments
Many of the products and books I review are things I purchased for my own use. Some were given to me specifically for the purpose of reviewing them. I resell or can earn commissions from the sale of some of these items. Links within these pages may be affiliate links that pay me for referring you to them. That's mostly insignificant amounts of money; whenever it is not I have made my relationship plain. I also may own stock in companies mentioned here. If you have any question, please do feel free to contact me.
I am a Kerio reseller. Articles here related to Kerio products reflect my honest opinion, but I do have an obvious interest in selling those products also.
Specific links that take you to pages that allow you to purchase the item I reviewed are very likely to pay me a commission. Many of the books I review were given to me by the publishers specifically for the purpose of writing a review. These gifts and referral fees do not affect my opinions; I often give bad reviews anyway.
We use Google third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.