uabrc / uabrc/uabrc.github.io

Deprecate s3cmd and s5cmd

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#1,136 0 comments 0 reactions 1 assignee View on GitHub

@Premas is already working on this.

Since Sep 1, 2026.

fix: inaccuracy ⚠️ system: data-mgmt 🗃️ system: storage 🛢
Dominant language
Python
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24
Forks
15
Avg merge
10d 3h
Merged PRs (30d)
1

Description

What is inaccurate?
  • s3cmd is unmaintained and its documentation recommends using awscli
  • s5cmd appears to be abandoned based on time of the last release (14 months ago) and the state of issues and PRs.

Here are our recommendations:

  • Prefer Globus (once the performance degradation bug is fixed) in all cases.
  • If a CLI tool is required, consider Globus CLI.
  • If Globus is not possible...
    • ...and the data is from LTS to/from a local machine, a VM, or Cheaha, use awscli and make use of parallelization as needed. rclone may also be used.
    • ...and the data is from LTS to AWS, or any other S3-compatible storage, use rclone. awscli is not capable of transferring data between two different S3 endpoints.

As part of making this change, we need to analyze the performance of data transfers using awscli and rclone using comparable parameters. This will guide how we suggest prioritizing which software to choose.

Where is the inaccuracy?

Review all LTS pages, and anywhere else, for mentions of s3cmd and s5cmd.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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