Add a keychain to search list?

Question

I need to add a .keychain file to my keychains search list for some automated build tools. Currently I'm using security list-keychains command:

list-keychains [-h] [-d user|system|common|dynamic] [-s [keychain...]]
        Display or manipulate the keychain search list.

This command let's you set the entire keychain search list, but it does not provide a way to simply add another keychain. So adding a keychain becomes a 2 step process.

1. Run list-keychains and parse the output
2. Then do something like list-keychains -s ${existing_chains} ${new_keychain}

While this works, it seems overly complicated and introduces a race condition.

Also it seems like open my.keychain will add it to the search list, but I tend to avoid using commands like open in scripting or headless environments.

Is there a simpler or better way to add a keychain to the search list?

Answer 1

A one line version of @mles solution above:

security list-keychains -d user -s $(security list-keychains -d user | sed -e s/\"//g) <new keychain>

The issue with directly piping in the output of security list-keychains -d user is it surrounds the results with quotes. Solution uses sed to strip them out.