打开新的终端后，会显示一些信息（以前安装的时候，没有这玩意）：
[oh-my-zsh] Insecure completion-dependent directories detected:
drwxrwxr-x 3 zhangli53 admin 96 4 8 12:12 /usr/local/share/zsh
drwxrwxr-x 2 zhangli53 admin 64 4 8 12:12 /usr/local/share/zsh/site-functions
[oh-my-zsh] For safety, we will not load completions from these directories until
[oh-my-zsh] you fix their permissions and ownership and restart zsh.
[oh-my-zsh] See the above list for directories with group or other writability.
[oh-my-zsh] To fix your permissions you can do so by disabling
[oh-my-zsh] the write permission of "group" and "others" and making sure that the
[oh-my-zsh] owner of these directories is either root or your current user.
[oh-my-zsh] The following command may help:
[oh-my-zsh] compaudit | xargs chmod g-w,o-w
[oh-my-zsh] If the above didn't help or you want to skip the verification of
[oh-my-zsh] insecure directories you can set the variable ZSH_DISABLE_COMPFIX to
[oh-my-zsh] "true" before oh-my-zsh is sourced in your zshrc file.所以要把这个信息屏蔽掉：
vim ~/.zshrc文件第一行加入：
ZSH_DISABLE_COMPFIX="true" # 有的版本有引号， 有的版本无引号，自己尝试保存之后，再执行命令：
source ~/.zshrc # 原封不动的执行这条命令就ok了，再开新终端就生效了