Jun Yin injune1123

## Postgresql Cheat Sheet
sudo su - postgres

create database #{DATABASE_NAME};


psql -U postgres

//list all dbs
postgres-# \l

## Git Command Cheat Sheet
Learning resources:
https://learngitbranching.js.org/

I stashed twice, what shall I do????!!!!
https://www.atlassian.com/git/tutorials/saving-changes/git-stash

$git stash list
$git stash apply stash@{n}

Switching remote URLs

## Java Cheat Sheet
//check the version of JAVA
java -version

// Switch to JAVA 8 on macOS High Sierra and Mojave
$export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/

## keybase.md

      
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                injune1123
                / keybase.md
            
            
              Created
              October 2, 2018 23:15
            
              
                link Github with Keybase
              
          
    Keybase proof

I hereby claim:

I am injune1123 on github.
I am injune1123 (https://keybase.io/injune1123) on keybase.
I have a public key ASDTnw94BeOrfECmNpM7dSdWhJnx78S7pT5fJfmeb_I5GAo

To claim this, I am signing this object:
	sudo su - postgres

	create database #{DATABASE_NAME};


	psql -U postgres

	//list all dbs
	postgres-# \l
	Learning resources:
	https://learngitbranching.js.org/

	I stashed twice, what shall I do????!!!!
	https://www.atlassian.com/git/tutorials/saving-changes/git-stash

	$git stash list
	$git stash apply stash@{n}

	Switching remote URLs
	//check the version of JAVA
	java -version

	// Switch to JAVA 8 on macOS High Sierra and Mojave
	$export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/