CPDUP -- Filesystem Mirroring Utility

Introduction

The cpdup utility makes an exact mirror copy of the source in the destination, creating and deleting files and directories as necessary. UTimes, hardlinks, softlinks, devices, permissions, and flags are mirrored. By default, cpdup asks for confirmation if any file or directory needs to be removed from the destination and does not copy files which it believes to have already been synchronized (by observing that the source and destination files' sizes and mtimes match). cpdup does not cross mount points in either the source or the destination. As a safety measure, cpdup refuses to replace a destination directory with a file.

The cpdup utility was originally created to update servers at BEST Internet circa 1997 and was placed under the FreeBSD copyright for inclusion in the Ports Collection in 1999. This utility was written by Matthew Dillon, Dima Ruban, and later significantly improved by Oliver Fromme.

Upstream source: DragonFly BSD's bin/cpdup

Manual page: cpdup(1)

Platforms

• DragonFly BSD
• FreeBSD
• NetBSD
• Linux (tested on Arch Linux and CentOS)

(Welcome to help test on and port to more platforms)

Installation

1. Install dependencies:

   • make (GNU make)
   • gcc
   • pkg-config
   • libbsd-dev (Required only on Linux)
   • libssl-dev (OpenSSL/LibreSSL)

   Arch Linux: pacman -S pkgconf libbsd openssl

   CentOS: yum install pkgconfig libbsd-devel openssl-devel

   Debian: apt install pkg-config libbsd-dev libssl-dev

   DragonFly BSD / FreeBSD: pkg install gmake pkgconf libressl

2. Build: make

3. Install: sudo make install [PREFIX=/usr/local]

Packages

Arch Linux:

$ make archpkg
$ sudo pacman -U cpdup-*.pkg.*

CentOS:

$ make rpm
$ sudo rpm -ivh cpdup-*.rpm

License

The 3-Clause BSD License