AWS-CLI-Basics

1. Listing AWS bucket content. (Testing for list permission)

Sahils-MacBook-Pro:~ sahil$ aws s3 ls s3://bucket

2. Writing on AWS Bucket. (Testing for write Permission)

Sahils-MacBook-Pro:~ sahil$ aws s3 cp test.txt s3://bucket (Copying test.txt into the bucket with no public file read permission)
Sahils-MacBook-Pro:~ sahil$ aws s3 mv test.txt s3://bucket (Moving test.txt into the bucket with no public file read permission)

Copy test.txt file into the aws s3 bucket with public file read permission. 
Sahils-MacBook-Pro:~ sahil$ aws s3 cp test.txt s3://bucket --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers

Sometimes the bucket are only available in a particular region. For that use the following regions with `--region` flag. 

1. US East (N. Virginia) - us-east-1	
2. US East (Ohio)	- us-east-2
3. US West (N. California)	- us-west-1	
4. US West (Oregon)	- us-west-2	
5. Canada (Central)	- ca-central-1	
6. Asia Pacific (Mumbai)	- ap-south-1	
7. Asia Pacific (Seoul)	- ap-northeast-2	
8. Asia Pacific (Osaka-Local) ***	 - ap-northeast-3	
9. Asia Pacific (Singapore)	- ap-southeast-1	
10. Asia Pacific (Sydney)	- ap-southeast-2	
11. Asia Pacific (Tokyo)	- ap-northeast-1	
12. China (Beijing)	- cn-north-1	
13. China (Ningxia)	- cn-northwest-1	
14. EU (Frankfurt)	- eu-central-1	
15. EU (Ireland)	- eu-west-1	
16. EU (London)	- eu-west-2	
17. EU (Paris)	- eu-west-3	
18. South America (São Paulo)	- sa-east-1	

Example: 

Sahils-MacBook-Pro:~ sahil$ aws s3 ls s3://bucket --region us-east-2

3. Deleting files from the bucket. 

Sahils-MacBook-Pro:~ sahil$ aws s3 rm s3://bucket/test.txt 

Reference : https://docs.aws.amazon.com/general/latest/gr/rande.html