一、問題：執行git remote add origin [email protected]:yylxm/Git.git
出現問題fatal: remote origin already exists.
解決辦法：git remote顯示所有的遠程庫，然後採用git remote rm origin刪除該origin。
二、問題： 採用git push -u origin master推送本地庫到github
出現問題fatal: I don't handle protocol 'git@https'
解決辦法：採用git remote add origin http://github.com:yylxm/Git.git，Git.git是在github上創建的repositories 。
三、問題：執行$ git push -u origin master
出現問題 Username for 'https://github.com': yylxm
To https://github.com/yylxm/YYXQZ.git
! [rejected] master -> master (fetch first)
error: failed to push some refs to 'https://github.com/yylxm/YYXQZ.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.
解決辦法：錯誤的主要原因是github中的README.md文件不在本地代碼目錄中，
可以通過如下命令進行代碼合併【注：pull=fetch+merge】 git pull --rebase origin master
再通過命令git push -u origin master完成代碼上傳到github的操作。