Mirror is a Command-Line utility designed to copy a directory to another location and can be easily used in scripts and batch files.

After copying, if the destination directory already exists, Mirror will only copy the files that have been added, modified, or deleted compared to the source directory.

Mirror is perfectly adapted to performing frequent backups. Additionally, compared to a classical directory copy, Mirror saves time by only copying new or modified files. Also, when Mirror detects that a file is no longer present in the source directory, it will delete it from the destination directory as well. This process saves disk space if you are renaming or moving files.

An extensive Help file is available here (the options list is at the end).

Mirror Features:

Mirroring of two directories

Only the modified files are copied, using adjustable criteria: size, modification time, archive attribute, file contents comparison

Inclusive or exclusive mode: copy only some files, or all files but some of them

Patterns such as *.txt or *\.git to limit the number of files to copy

Advanced support of modification times: FAT imprecisions and limitations are supported

Unicode support

Many logging options

Similar:

The Ultimate List of Every Known Command Prompt and PowerShell Commands

How to Add 'Open Command Window Here' Context Menu

PowerShell and Command Prompt 101

How to Reset PowerShell and Command Prompt

How-To Run PowerShell or the Command Prompt as Administrator

How to Switch Between Command Prompt or PowerShell on Win+X Menu

How to View, Save, and Clear Your PowerShell and Command Prompt History