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今天在学习git时，
$ sudo git push origin master 报错了：
To https://github.com/xxxxx/xxxx.git
! [rejected] master -> master (fetch first)
error: failed to push some refs to 'https://github.com/xxxx/xxxxx.git'
hint: Updates were rejected because the remote contains work that you do
hint: not have locally. This is usually caused by another repository pushing
hint: to the same ref. You may want to first integrate the remote changes
hint: (e.g., 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.解决很简单，
$ sudo git pull origin master //将本地代码先更新到和github上的一样
warning: no common commits
remote: Counting objects: 3, done.
remote: Total 3 (delta 0), reused 3 (delta 0), pack-reused 0
Unpacking objects: 100% (3/3), done.
From https://github.com/xxxxx/xxxx
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
Merge made by the 'recursive' strategy.
hello_world.txt | 1 +
1 file changed, 1 insertion(+)
create mode 100644 hello_world.txt
会自动打开一个GUN 什么的编辑界面，ctrl + x退出就好
$ sudo git push origin master //将本地代码push到github上
Username for 'https://github.com': xxxx
Password for 'https://[email protected]':
Counting objects: 5, done.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (5/5), 522 bytes | 0 bytes/s, done.
Total 5 (delta 0), reused 0 (delta 0)
To https://github.com/xxxx/xxxx.git
e8064b2..c2bab39 master -> master
代码已经成功上传到了github上，问题解决了。