splitring lets you merge OS X Keychains by importing all the items
in one or more specified keychains into another keychain.
You can use it to get back to a single login keychain if you've migrated to a new computer and are tired of typing your password to unlock your old keychains.
The bad news is that you'll have to click "Allow" in the keychain authorization dialog once for every password that is copied. This is a result of the way OS X limits access to the keychain--so much so that even Keychain Access, a system utility, does it if you try to export all of your passwords at once. The good news is that you'll never be prompted randomly, at some inopportune time, to type an old keychain's password.
The utility currently only imports passwords, as copying certificates
increases the risk of breaking a system service (I'm looking at you,
iCloud.) If you want to import certificates, keys, and identities,
grep the source for kSecClassCertificate and uncomment to your
heart's desire.
usage: splitring [-v | --verbose] [--version] [-d | --dry-run]
[--to-keychain=<path>] keychain-file ...
--verbose Explain what's happening.
--version Print the version of the program
--dry-run Don't actually import any items,
just show what would be done.
--to-keychain=<path> Import all items to the keychain
located at <path>. By default,
this is the current default
keychain, which is usually the
login keychain.
# Import all the passwords in old.keychain into the login keychain.
$ ./splitring -v old.keychain
Unlocking keychain at path: /Users/phil/old.keychain
Importing 4 items to keychain at path: /Users/phil/Library/Keychains/login.keychain
Copying item named 'AppleID' (1 of 4)... The specified item already exists in the keychain.
Copying item named 'Safari Forms AutoFill' (2 of 4)... copied
Copying item named 'skype' (3 of 4)... copied
Copying item named 'photosmart' (4 of 4)... copied
If you have Homebrew installed, you can just run:
brew install https://raw.github.com/pnc/splitring/master/dist/splitring.rb
That's all there is to it! Just run splitring from your terminal.
To build splitring, you can use Xcode (open splitring.xcodeproj),
the xcodebuild tool, or make:
$ make
$ ./splitring
If you don't codesign the binary, you'll see an extra-scary message from OS X:
"The authenticity of "splitring" cannot be verified. Do you want to allow access to this item?"
This doesn't affect operation negatively.
To codesign, obtain or generate a certificate by following these instructions and then run:
$ codesign -s 'Name of Your Identity' splitring