错误提示：warning: push.default is unset

git push 时报错

# git push
warning: push.default is unset; its implicit value is changing in
Git 2.0 from 'matching' to 'simple'. To squelch this message
and maintain the current behavior after the default changes, use:

  git config --global push.default matching

To squelch this message and adopt the new behavior now, use:

  git config --global push.default simple

See 'git help config' and search for 'push.default' for further information.
(the 'simple' mode was introduced in Git 1.7.11. Use the similar mode
'current' instead of 'simple' if you sometimes use older versions of Git)

错误原因

push.default 没有配置导致告警

解决方法：

 //设置默认行为为simple。 Git2.0以后
 git config --global push.default simple  
 //设置默认行为为matching。Git2.0以前
 git config --global push.default matching