cat - Concatenate Files and Print on Standard Output Using cat as a primitive word processor. You can enter the below command, type your text, press ENTER to finish the line, and then press CTRL-D to indicate the end-of-file. bharatwaj@comp:~$ c...
/ - The root directory, where everything begins /bin - Contains binaries (programs) that must be present for the system to boot and run /boot - Contains the Linux kernel, initial RAM disk image (for drivers needed at boot time), and the boot loader...
Lake Formation Data lake - central place to have all your data for analytics purposes Fully managed service that makes it easy to setup a data lake in days Discover, cleanse, transform, and ingest data into your Data Lake It automates many comple...
Glue Introduction Managed extract, transform, and load (ETL) service Useful to prepare and transform data for analytics Fully serverless service An example transformation Converting data into Parquet format Glue Data Catalog Summar...
QuickSight Overview Serverless machine learning-powered business intelligence service to create interactive dashboards Fast, automatically scalable, embeddable, with per-session pricing Use cases Business analytics Building visualizations Perf...
EMR EMR stands for “Elastic MapReduce” EMR helps creating Hadoop clusters (Big Data) to analyze and process vast amount of data The clusters can be made of hundreds of EC2 instances EMR comes bundled with Apache Spark, HBase, Presto, Flink EMR t...
OpenSearch Amazon OpenSearch is successor to Amazon ElasticSearch In DynamoDB, queries only exist by primary key or indexes With OpenSearch, you can search any field, even partially matches It’s common to use OpenSearch as a complement to another...
Redshift Overview Redshift is based on PostgreSQL, but it’s not used for OLTP It’s OLAP – online analytical processing (analytics and data warehousing) 10x better performance than other data warehouses, scale to PBs of data Columnar storage of d...
Athena Overview Serverless query service to analyze data stored in Amazon S3 Uses standard SQL language to query the files (built on Presto) Supports CSV, JSON, ORC, Avro, and Parquet Commonly used with Amazon Quicksight for reporting/dashboards...