betamacosmojave
I’m attempting to set a permanent new User Agent for Safari running on macOS Mojave (Developer Beta 10.14.0). However, it doesn’t work and changes to default each time. I ran the command below but it doesn’t seem to do anything. Is the behaviour possibly changed?
defaults write com.apple.Safari CustomUserAgent "\"Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en) AppleWebKit/419 (KHTML, like Gecko) Safari/419.3\""
Error: Your Xcode (9.4) is too outdated.
Please update to Xcode 10.0 (or delete it).
Xcode can be updated from
https://developer.apple.com/download/more/
Error: Xcode alone is not sufficient on Mojave.
Install the Command Line Tools:
xcode-select --install
This is a different error, however the solution is the same: install the Xcode 10 Beta and then run xcode-select --install.
First, agree to the invisible license agreement.
Wait for it to install...
Now, Brew works happily.
With latest beta 2 update 10.14 Beta (18A314h) issue is resolved.
After this I could update apps and initiate new downloads.
Best Answer
If things stop working (or don't work as expected) after an upgrade to a beta version of Mojave the most likely cause is a bug in macOS (that's why it's called Beta after all). Best course of action is to report it to Apple using the usual feedback channels for beta releases, ideally in a way which makes it easy for Apple to reproduce the issue.