# name,email 涉及contribution统计

git config --global user.name "Chen Xie"
git config --global user.email "chenxie2016@163.com"

# check the origin URL AND modify the origin URL
git remote -v
git remote set-url origin <NEW_GIT_URL_HERE>
# simple for current branch, matching for all branches

git config --global push.default simple

# sensitive to up/lower case

git config core.ignorecase false

# check all config
git config --list

#Generate your key with your email.
ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
#all key file under ~/.ssh/
#id_rsa is private key, don't give it to anyone.  
#id_rsa.pub is public key for GitHub

# different location to generate key Files
ssh-keygen -t rsa -f ~/Documents/sshkey/{name}

git rm -r --cached .
git add .

### General
*.[oa] *~  # Gedit
.*.sw[po]  # Vim
.DS_Store  # Mac_OS

### Java

#### Mobile Tools for Java (J2ME)

.mtj.tmp/

#### compile

*.class
target

#### Package
*.war
*.ear
*.jar

#### Eclipse
.project
.classpath
.settings
.metadata

#### virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
hs_err_pid*

# git add all files 
git add .

# commit
git commit -m ""

git push origin main

# list branch list
git branch

# change the default branch
git config --global init.defaultBranch {branchName}

# basic branching and merging
git checkout -b iss53
# Switched to a new branch "iss53"
# do modifying and add commit things

#mergin
git checkout main
# Switched to branch 'master'
git merge iss53
# merge iss53 to main

git reset --hard # discard all changes
git clean -f -d #remove untracked
git clean -f -d -x # above plus ignored file

# last commit
git checkout filename

# one commit
git log
# choose one commit to recover
git checkout --HEAD filename

#TODO
git reset