Learning Restic - Pre-Requisites Skills & Environment Setup

#Introduction

Welcome to the Learning Restic series! This series will take you from zero to mastery of restic — a modern backup program built with Go that is fast, secure, and efficient thanks to built-in deduplication and AES-256 encryption — for backing up servers, containers, database dumps, and cloud/object storage. There are 23 episodes in total, arranged in six phases, from the conceptual foundations all the way to production readiness.

Before you type your first restic backup, there are prerequisite skills and software you must prepare. Why are prerequisites important? Because restic works at the intersection of three worlds: the filesystem (source of data), storage (destination of data), and security (encryption & keys). Without understanding all three, you will easily get lost when a backup fails, a restore is incomplete, or a repository password goes missing.

Episode 0 is your roadmap: we make sure the prerequisite skills are in place, install the tooling, prepare storage, and verify the environment for the first time.

#Prerequisite Skills You Must Have

#Linux CLI (Bash)

Restic is a CLI program. You need to be comfortable with the shell, pipes, redirection, and basic scripting:

ls -lah /home/user
du -sh /home/user
ps aux | grep postgres

Also understand exit codes ($?), because backup automation (episode 9) relies heavily on a command's exit status.

#Filesystem & Permission Concepts

Restic records paths, metadata, and file permissions. You need to understand the concepts of hardlinks, symlinks, sparse files, and mount points — all of these affect the backup result. Read permissions are also critical: a user without read access to a directory cannot back it up.

#Storage Access

Understand the difference between local storage (a directory on disk), remote storage (SSH/SFTP), and object storage (S3-compatible, such as MinIO, AWS S3, B2). Restic supports all of them, and your choice determines performance and cost — we cover this in detail in episode 7.

#Software and Hardware to Prepare

#restic 0.19.1 Binary

For this series we use restic 0.19.1 (released ~July 5, 2026, current stable). It is available for Linux, macOS, and Windows — download it from the official GitHub releases page and verify the checksum:

wget https://github.com/restic/restic/releases/download/v0.19.1/restic_0.19.1_linux_amd64.bz2
sha256sum restic_0.19.1_linux_amd64.bz2
bzip2 -d restic_0.19.1_linux_amd64.bz2
sudo mv restic_0.19.1_linux_amd64 /usr/local/bin/restic

Match the sha256sum output against the checksum on the releases page. This is a mandatory security step — never run a binary you have not verified.

#Repository Storage

Prepare an empty directory for a local repository, or a MinIO/S3 bucket if you want to try object storage. For the early practice episodes, a local directory is enough:

mkdir -p /backup/restic

#Automation

Prepare cron or systemd — both are used heavily in episodes 9 and 20 for scheduling backups and monitoring.

#Environment Verification

Before moving on, verify the installation:

restic version
restic self-update --check

restic version should print a version (for example restic 0.19.1 compiled with go1.24).

#Prerequisites Summary

• Skills: Linux CLI, filesystem & permission concepts, storage access, basic encryption.
• Tooling: restic 0.19.1 installed and checksum-verified.
• Storage: the /backup/restic directory or an S3/object storage bucket ready to use.
• Automation: cron/systemd available on the system.

If any of these are not in place, stop and complete them before continuing. The next 22 episodes will go much more smoothly with this strong foundation.

#Conclusion

• Restic is a modern backup tool: dedup + encryption, multi-platform, many backends.
• Mandatory prerequisites: Linux CLI, filesystem/permission concepts, and storage access.
• Install restic 0.19.1 and always verify the checksum before running it.
• Prepare the repository directory and automation (cron/systemd).
• Verify with restic version before you begin.

In the next episode, episode 1, we will cover the history, background, and why you need Restic — from the birth of this community project in 2016 as a modern alternative to tar/rsync, to the reason "backups done right" became its tagline: snapshots, dedup, and encryption. Your environment is ready — time to understand why this tool exists.