How to compile and install Tarsnap on a Ubuntu/Debian Linux

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A Tarsnap service is a secure online backup system for Linux, OSX, *BSD or UNIX-like system. They encrypt and store data in Amazon S3. The services also use rsync-like algorithms, and only backup data that has been changed since the last dump. The backups are protected by a security key only known to a backup operator or sysadmin. How do I install a tarsnap client on a Ubuntu or Debian Linux system?
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How To Wakeup Backup Nas Server and Mirror Files Using Rsync in Linux

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I‘ve a critical data stored on my small home server. I backup my Desktop, Laptop and a remote VPS server to my home nas server powered by Debian Linux using rsnapshot backup utility. In the event that my main nas server has a hardware (hard disk failure) problem, having mirrored files provides some sort of peace of mind. How do I mirror /backups/personal (total 100GB and growing everyday) to a secondary nas Linux server located in my network?

Rsync Preserve / Copy Hard Links ( Backup Rsnapshot Directory Tree )

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I‘m using rsnapshot filesystem snapshot utility to make incremental snapshots of local and remote filesystems for 10 production servers running on RHEL 5.x system. The rsnapshot commands makes extensive use of hard links, so if the file doesn’t change, the next snapshot is simply a hard link to the exact same file. How do I use the rsync command to copy my the entire snapshot directory /raid6/rsnapshot/ (around 4TB) to a remote server for mirroring purpose?