因为 github 上仓库里删过一些内容，导致本地的仓库和 github 里的对不上了。
此时用 git push 操作就会报 non-fast-forward，error: failed to push some refs to 的错误，这也是 git 安全机制的一部分。
所以我们只需要进行下 git pull origin master 就行了，其中 origin 指的是仓库源，master 指的是分支。
git pull origin master 就相当于：
$ git fetch origin master # 从github上抓取代码到本地 $ git merge origin FETCH_HEAD # 与本地代码进行合并
执行过程中会弹出这样一个编辑框，可以用来记录此次调整的改动。
编辑方法如果不会可以看这篇文章：
Linux 技术篇-使用vim命令创建、编辑文件内容实例演示，linux修改文档方法
都做完了，再进行 git add、git commit、git push 操作重新同步就可以了。
强制同步方法：
如果 git push 加个 -f 或 –force 参数可以强制进行同步。
下面是整个操作的完整过程：
小蓝枣+Administrator@С▒▒▒▒ MINGW64 /c/Py_jupyter (master) $ git push -u origin master To https://github.com/2418546511/Py_jyputer.git/ ! [rejected] master -> master (non-fast-forward) error: failed to push some refs to 'https://2418546511:xxx@github.com/2418546511/Py_jyputer.git/' hint: Updates were rejected because the tip of your current branch is behind hint: its remote counterpart. Integrate the remote changes (e.g. hint: 'git pull ...') before pushing again. hint: See the 'Note about fast-forwards' in 'git push --help' for details. 小蓝枣+Administrator@С▒▒▒▒ MINGW64 /c/Py_jupyter (master) $ git pull origin master From https://github.com/2418546511/Py_jyputer * branch master -> FETCH_HEAD Removing Java_Project/untitled1/untitled1.iml Removing Java_Project/untitled1/.idea/modules.xml Removing Java_Project/untitled1/.idea/misc.xml Removing Java_Project/untitled1/.idea/libraries/workbench_workbenchLevel_1.xml Removing Java_Project/untitled1/.idea/libraries/polardb_jdbc18.xml Removing Java_Project/untitled1/.idea/.gitignore Removing Java_Project/test/test.iml Removing Java_Project/test/src/com/test/test/test.java Removing Java_Project/test/src/com/test/test/readExcel.java Removing Java_Project/test/src/com/test/test/SiKuliTest.java Removing Java_Project/test/src/com/test/test/ReadFile.java Removing Java_Project/test/src/com/test/test/ReadClipboard.java Removing Java_Project/test/out/production/test/com/test/test/readExcel.class Removing Java_Project/test/out/production/test/com/test/test/SiKuliTest.class Removing Java_Project/test/.idea/modules.xml Removing Java_Project/test/.idea/misc.xml Removing Java_Project/test/.idea/compiler.xml Removing Java_Project/test/.idea/.gitignore Adding Java_Project/dbmanage/src/com/dbmanage/db/config.txt Adding Java_Project/dbmanage/src/com/dbmanage/db/ReadFile.java Adding Java_Project/dbmanage/src/com/dbmanage/db/ReadClipboard.java Adding Java_Project/dbmanage/src/com/dbmanage/db/DBUpdate.java Adding Java_Project/dbmanage/src/com/dbmanage/db/DBQuery.java Adding Java_Project/dbmanage/src/com/dbmanage/db/DBMain.java Adding Java_Project/dbmanage/src/com/dbmanage/db/DBConn.java Adding Java_Project/dbmanage/src/META-INF/MANIFEST.MF Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/config.txt Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/ReadFile.class Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/ReadClipboard.class Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/ReadClipboard$Result.class Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/DBUpdate.class Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/DBQuery.class Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/DBMain.class Adding Java_Project/dbmanage/out/production/dbmanage/com/dbmanage/db/DBConn.class Adding Java_Project/dbmanage/out/production/dbmanage/META-INF/MANIFEST.MF Adding Java_Project/dbmanage/out/artifacts/dbmanage_jar/dbmanage.jar Adding Java_Project/dbmanage/dbmanage.iml Adding Java_Project/dbmanage/.idea/vcs.xml Adding Java_Project/dbmanage/.idea/uiDesigner.xml Adding Java_Project/dbmanage/.idea/modules.xml Adding Java_Project/dbmanage/.idea/misc.xml Adding Java_Project/dbmanage/.idea/compiler.xml Adding Java_Project/dbmanage/.idea/artifacts/dbmanage_jar.xml Adding Java_Project/dbmanage/.idea/.gitignore Removing Java_Project/databaseTool/databaseTool.iml Removing Java_Project/databaseTool/.idea/modules.xml Removing Java_Project/databaseTool/.idea/misc.xml Removing Java_Project/databaseTool/.idea/.gitignore Merge made by the 'recursive' strategy. Java_Project/databaseTool/.idea/.gitignore | 3 - Java_Project/databaseTool/.idea/misc.xml | 6 -- Java_Project/databaseTool/.idea/modules.xml | 8 --- Java_Project/databaseTool/databaseTool.iml | 11 --- Java_Project/test/.idea/.gitignore | 3 - Java_Project/test/.idea/compiler.xml | 6 -- Java_Project/test/.idea/misc.xml | 6 -- Java_Project/test/.idea/modules.xml | 8 --- .../production/test/com/test/test/SiKuliTest.class | Bin 1234 -> 0 bytes .../production/test/com/test/test/readExcel.class | Bin 3730 -> 0 bytes .../test/src/com/test/test/ReadClipboard.java | 63 ----------------- Java_Project/test/src/com/test/test/ReadFile.java | 38 ----------- .../test/src/com/test/test/SiKuliTest.java | 26 ------- Java_Project/test/src/com/test/test/readExcel.java | 76 --------------------- Java_Project/test/src/com/test/test/test.java | 35 ---------- Java_Project/test/test.iml | 29 -------- Java_Project/untitled1/.idea/.gitignore | 3 - .../untitled1/.idea/libraries/polardb_jdbc18.xml | 9 --- .../.idea/libraries/workbench_workbenchLevel_1.xml | 9 --- Java_Project/untitled1/.idea/misc.xml | 6 -- Java_Project/untitled1/.idea/modules.xml | 8 --- Java_Project/untitled1/untitled1.iml | 13 ---- 22 files changed, 366 deletions(-) delete mode 100644 Java_Project/databaseTool/.idea/.gitignore delete mode 100644 Java_Project/databaseTool/.idea/misc.xml delete mode 100644 Java_Project/databaseTool/.idea/modules.xml delete mode 100644 Java_Project/databaseTool/databaseTool.iml delete mode 100644 Java_Project/test/.idea/.gitignore delete mode 100644 Java_Project/test/.idea/compiler.xml delete mode 100644 Java_Project/test/.idea/misc.xml delete mode 100644 Java_Project/test/.idea/modules.xml delete mode 100644 Java_Project/test/out/production/test/com/test/test/SiKuliTest.class delete mode 100644 Java_Project/test/out/production/test/com/test/test/readExcel.class delete mode 100644 Java_Project/test/src/com/test/test/ReadClipboard.java delete mode 100644 Java_Project/test/src/com/test/test/ReadFile.java delete mode 100644 Java_Project/test/src/com/test/test/SiKuliTest.java delete mode 100644 Java_Project/test/src/com/test/test/readExcel.java delete mode 100644 Java_Project/test/src/com/test/test/test.java delete mode 100644 Java_Project/test/test.iml delete mode 100644 Java_Project/untitled1/.idea/.gitignore delete mode 100644 Java_Project/untitled1/.idea/libraries/polardb_jdbc18.xml delete mode 100644 Java_Project/untitled1/.idea/libraries/workbench_workbenchLevel_1.xml delete mode 100644 Java_Project/untitled1/.idea/misc.xml delete mode 100644 Java_Project/untitled1/.idea/modules.xml delete mode 100644 Java_Project/untitled1/untitled1.iml 小蓝枣+Administrator@С▒▒▒▒ MINGW64 /c/Py_jupyter (master) $ git add Java_Project 小蓝枣+Administrator@С▒▒▒▒ MINGW64 /c/Py_jupyter (master) $ git commit -m "update java project 6.30" [master 37e0f83] update java project 6.30 3 files changed, 324 insertions(+) create mode 100644 Java_Project/databaseTool/.idea/workspace.xml create mode 100644 Java_Project/test/.idea/workspace.xml create mode 100644 Java_Project/untitled1/.idea/workspace.xml 小蓝枣+Administrator@С▒▒▒▒ MINGW64 /c/Py_jupyter (master) $ git push -u origin master Enumerating objects: 76, done. Counting objects: 100% (76/76), done. Delta compression using up to 16 threads Compressing objects: 100% (50/50), done. error: RPC failed; curl 55 SSL_write() returned SYSCALL, errno = 10053 fatal: the remote end hung up unexpectedly 88.00 KiB/s Writing objects: 100% (67/67), 21.22 MiB | 346.00 KiB/s, done. Total 67 (delta 9), reused 0 (delta 0) fatal: the remote end hung up unexpectedly Everything up-to-date
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