Date: Advanced Usage of the Date Command

Introduction

The date command can be very useful for advanced date calculations.

Usage

• Calculates the date 2 weeks ago from Saturday in the specified format:

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date -d '2 weeks ago Saturday' +%Y-%m-%d

• Unix alias for date command that lets you create timestamps in ISO 8601 format:

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alias timestamp='date "+%Y%m%dT%H%M%S"'