Skip to main content

How to use AWS CLI for uploading/downloading/deleting files

By

 Hello again

It's been a lot of time that we have posted here. So let's start with AWS S3 CLI.  We can use AWS CLI for various operations such as

  • Uploading files from local machine into S3 bucket
  • Downloading files from S3 bucket into local machine
  • Listing all the files in a S3 bucket
  • Deleting files from the S3 bucket
For all the above operations to be performed we would need relevant access permissions to the specified bucket as well. Apart from permissions the three things which we would need are a) Bucket name b)Access key c) Secret Access key

First lets install AWS CLI on our machine.


In Mac

Installing aws cli
curl "https://awscli.amazonaws.com/AWSCLIV2.pkg" -o "AWSCLIV2.pkg"
sudo installer -pkg AWSCLIV2.pkg -target /

In order to test this has worked or not try the simple command

aws --version







We should get a result in above format

Now lets configure for that we need to pass the following command

aws configure

upon clicking enter it would ask for enter access key and secret access key. region can be ignored output format name also can be ignored









Once this is done it's the four basic operations which we will try to perform

a) Uploading files from local machine

aws s3 cp test.txt s3://bucketname/input/test.txt

if you are in different directory in your machine. Also "input" is a directory in S3 bucket

aws s3 cp users/anirudh/downloads/test.txt s3://bucketname/input/test.txt

b) Downloading files from S3 into local machine

aws s3 cp s3://bucketname/input/Dummy.csv /Users/anirudh/downloads/dummy.txt

c) Listing out all files in S3

aws s3 ls s3://bucketname/input

d) Deleting files in S3

aws s3 rm s3://bucketname/input/test.txt

Comments

Post a Comment

Popular posts from this blog

Comparing Objects in Informatica

By
We might face a scenario where there may be difference between PRODUCTION v/s SIT version of code or any environment or between different folders in same environment. In here we go for comparison of objects we can compare between mappings,sessions,workflows In Designer it would be present under "Mappings" tab we can find "Compare" option. In workflow manger under "Tasks & Workfows" tab we can find "Compare" option for tasks and workflows comparison respectively. However the easiest and probably the best practice would be by doing using Repository Manager.In Repository Manager under "Edit" tab we can find "Compare" option. The advantage of using Repository manager it compares all the objects at one go i.e. workflow,session and mapping. Hence reducing the effort of individually checking the mapping and session separately. Once we select the folder and corresponding workflow we Can click compare for checking out ...
11 comments
Read more

Types of Joins in Oracle/Teradata

By Anonymous
In Data warehousing, irrespective of schema (snow flake schema or star schema) we are using, we should join dimension and fact tables to analyze the business. Below are the frequently used joins: Inner join Left outer Join Right outer Join Cross join Inner Join: Inner join will give you the matching rows from both the tables. If the join condition is not matching then zero records will return. We should use ON keyword to give join condition. Example: Table1: ID Name 1 Krishna 2 Anirudh 4 Ashok Table2: ID Location 1 Bangalore 3 Chennai 4 Chennai We can join above two tables using inner join based on key column ID. SELECT T1.ID, T1.Name, T2.Location FROM Table1 T1 INNER JOIN Table2 T2 ON T1.ID = T2.ID     If we are using inner join, it will give us matching rows from both the table. Here in this example, we have 2 matching rows i.e. ID 1 and 4. Below will be the result set for the above exa...
Post a Comment
Read more

Looping using Expression Transformation in Informatica

By
One of the most common used transformation in Informatica is Expression transformation. In Expression transformation we can perform various operations such as data conversions i.e to_date,to_char, string manipulation such as substr,instr etc. Now coming to one of the widely and prominent task which we perform using Expression transformation is looping a value. Expression transformation has three types of ports i.e. input,variable and output.Only output port values can be propagated to next transformations. So in order to pass values of input and variable ports to next level of transformation these must be assigned to output ports.The order of execution in Expression transformation is top to bottom and first input then variable and finally output ports are processed. let us consider the following scenario   The files should be generated with employee name as file name and that particular file should have the details of that respective employee only, if the employee has more t...
1 comment
Read more