haua-mac-pro:bin haua$ /usr/local/mysql-5.7.10-osx10.9-x86_64/bin/mysqladmin -u root password oldpass '175239qq'
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'
haua-mac-pro:bin haua$ /usr/local/mysql-5.7.10-osx10.9-x86_64/bin/mysqladmin -u root -p password oldpass '175239qq'
Enter password: 
mysqladmin: [Warning] Using a password on the command line interface can be insecure.
Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.
mysqladmin: Unknown command: '175239qq'