mac modify / usr / bin / permissions cause the console unusable

Disclaimer: This article is a blogger original article, shall not be reproduced without the bloggers allowed. https://blog.csdn.net/ethan__xu/article/details/89390220

Open Terminal again Tip: Last login: Fri Jul 13 10:09:35 on ttys001login: login: Could not determine audit condition [ process is complete]
solution is as follows:

• First need to root recovery sudo command
  Open System Preferences
  
  
  
  
• Exit the current user, click Other, enter the root login user name and password, enter the root
• Reset sudo property
  $ chown root / usr / bin / sudo
  $ chmod 4755 / usr / bin / sudo
  exit the root account login status, switch back to the original user
  execute sudo command
  after normal sudo command to disable the root account
• Login ordinary users will login privileges restored 4755
• sudo chmod 4755 / usr / bin / login
  to open the console again has returned to normal.