• 好，我們常常在Push的時候，你會遇到很多問題啊!
• 舉個例子:
  • 你跟你的同學正在使用同個Repo
  • 你的同學昨天晚上在你睡覺之後，又commit了一次，並且push了
  • 所以在你電腦上的那一份是舊的版本，但你不知道
  • 這時候你想要Push的話，你就會得到一串錯誤訊息

$ git push
To https://github.com/jackey10055206/test.git
 ! [rejected]        master -> master (fetch first)
error: failed to push some refs to 'https://github.com/jackey10055206/test.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.

$ git pull
remote: Enumerating objects: 6, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (3/3), done.
remote: Total 4 (delta 0), reused 0 (delta 0), pack-reused 0
Unpacking objects: 100% (4/4), done.
From https://github.com/jackey10055206/test
   3bd6182..9d0d18f  master     -> origin/master
Merge made by the 'recursive' strategy.
 123.txt | 1 +
 1 file changed, 1 insertion(+)
 
 $ git push
Enumerating objects: 9, done.
Counting objects: 100% (8/8), done.
Delta compression using up to 8 threads
Compressing objects: 100% (4/4), done.
Writing objects: 100% (5/5), 609 bytes | 609.00 KiB/s, done.
Total 5 (delta 0), reused 0 (delta 0)
To https://github.com/jackey10055206/test.git
   9d0d18f..f77fa62  master -> master

• 沒錯，他會跟你說，你需要先使用git pull 你才能執行git push

• 所以我們上面介紹了一種"先拉在推"的方法嘛!

• 接下來我在跟你說一種"我是老大"的方法

  • 一模一樣的情況，只不過這一次你發現他寫的東西是錯的
  • 你剛好想要把你同學新增的東西給抹掉
  • 這時候你就可以使用這個秘密武器git push -f

$ git push
To https://github.com/jackey10055206/test.git
 ! [rejected]        master -> master (fetch first)
error: failed to push some refs to 'https://github.com/jackey10055206/test.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.

$ git push -f
Enumerating objects: 27, done.
Counting objects: 100% (27/27), done.
Delta compression using up to 8 threads
Compressing objects: 100% (17/17), done.
Writing objects: 100% (27/27), 4.05 KiB | 1.35 MiB/s, done.
Total 27 (delta 0), reused 0 (delta 0)
To https://github.com/jackey10055206/test.git
 + b1b9f61...2e1efe4 master -> master (forced update)

• 在這裡，後面的參數-f 意思就是強制
• 我們強制要push我們手中的版本上去!

明天來講講git clone吧!