Basic usage of git command line

//Create username and email
 git config --global user.name "richard"
 git config --global user.email "[email protected]"、



 //Check
 git config --global user.name
 git config --global user.email
 git init //create code repository
 ls -al //There will be a hidden .git file to view hidden files. If you delete the warehouse, you only need to delete this file.
 
 //add modified file
 git add build.gradle

//add modified folder

 git add app

//Add all files in the current directory

 git add .

//submit

 git commit -m "fitst commit"
 
 // ignore the file
 Git has a .gitigore file that can be configured to ignore files. When androidstudio creates a project, it automatically creates .gitigore, one in the root directory and one in the APP directory.
 
// check the status of the change
 git status
 // view the modified content
 git diff
 //Reverse uncommitted modifications (applicable without executing add)
 git checkout app/src/main/java/com/example/providers/MainActivity.java

 //If it has been added, how to revoke
 git reset HEAD app/src/main/java/com/example/providers/MainActivity.java
 git checkout HEAD app/src/main/java/com/example/providers/MainActivity.java
 
 git log //View the commit record
 git log commit record id -1 //just want to see one piece of data
  git log commit record id -1 -p //Want to see what was submitted
  
  // branch usage
  git branch version1.0 //Create branch
  git branch // view all branches
  
  //The bug on the branch is fixed and needs to be merged into the main branch
  git branch master
  git merge version1.0
  
  // branch delete
  git branch -d version1.0
  
  //Remotely
  git clone https://github.com.richard/test.git //Download the project to the local
  
  git push origin master //Submit remote, origin remote, master submitted branch
  
  // Synchronize remote to local commands fetch, pull, fetch syntax rules are similar to push
  
  git fetch origin master // Synchronize the remote to the local, but the synchronized code will not be merged into any branch, but exists on the origin/master branch,
  //At this time, you can use the diff command to see what has been modified:
  git diff origin/master,
  //Afterwards, merge the changes on the origin/master branch to the main branch through merge:
  git merge origin/master
  
  
  //Pull is equivalent to the merger of fetch and merge
  git pull origin master
  
  //How to host the project to github
  Create a warehouse aaa on github
  1. Select android.gitigore
  2. Select apache 2.0
  3. 生成 .gitigore LICENSE README.md
  4. Copy the github repository address
  5. Enter the project root directory and execute git clone github warehouse address
  6. At this time, copy all files in aaa (including .git, if you can't see all files, use ls -al to view all files) to the previous level and delete aaa
  7.git add .
  8.git commit -m "fist commit"
  9. git push origin master requires authentication at this point
  10. Refresh the github homepage, you can see the submitted project