在 Mac 上首次运行终端（使用 oh-my-zsh）时出现错误图标

Question

I always got an error when start terminal. It doesn't show error message, only show icon only. I see the /var/log/system.log there is no message too. Here is screenshot when start terminal

How to see error log? or anybody know why this error come?

Answer 1

Most likely this is only a display error. It depends on how your theme determines the exit status of the previous command.

For example, if it uses the parameter pipestatus it might lead to this problem. pipestatus is undefined immediately after the shell starts and will only be set once a command has been run. Should the theme only check for the exit code 0 in order to display a symbol for success, this check might fail on an undefined/empty pipestatus .

The error code of the last command is also stored in the parameter ? (or status ). Unlike pipestatus ? is already defined at the shell status. Run

echo $?

as the first command after you start a terminal. If it returns 0 , it would indicate that there was indeed no error.

Without knowing which theme you use it is hard to tell for sure.

---

Should there indeed be an error somewhere, it would not show in /var/log/system.log . Only system services will report errors in this file.

Answer 2

It's a macOS Mojave error. https://forums.developer.apple.com/thread/110501 . If you run cat /var/log/system.log It will show you:

iTerm2[28086]: DEPRECATED USE in libdispatch client: dispatch source activated with no event handler set; set a breakpoint on _dispatch_bug_deprecated to debug

Reinstall oh-my-zsh would fix this (which means a lot of work to do). https://github.com/robbyrussell/oh-my-zsh

But I think it's not a big deal, I prefer to wait for Apple fix it.