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🧩 How We Solved “Unable to Get Certificate CRL” in Rails: A Debugging Story

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If you’ve been around Rails long enough, you’ve probably battled your fair share of SSL demons. But this one? This one had personality . It was a Seahorse::Client::NetworkingError that failed only on macOS — yet worked perfectly inside Docker. The kind of “it works on my container” bug that makes you question every life choice leading up to this point. So here’s the story of how we chased down a ghostly SSL error, only to discover that the real culprit was… OpenSSL itself. ⚠️ The Error Seahorse::Client::NetworkingError SSL_connect returned=1 errno=0 peeraddr=[...] state=error: certificate verify failed (unable to get certificate CRL) This popped up whenever our Rails app tried connecting to AWS S3 using the aws-sdk-ruby gem. 🔍 The Contradiction That Made No Sense From the get-go, the bug refused to play by any rules of logic. ❌ It failed locally but ✅ Worked flawlessly in Docker That told us one thing: the problem wasn’t our code. It was the environment. macOS and Dock...
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Slack Basics

By Anonymous

                                Slack







What is Slack?


                       Slack is a workplace communication tool, “a single place for messaging, tools and files.” This means Slack is an instant messaging system with lots of add-ins for other workplace tools.

                    The add-ins aren’t necessary to use Slack, though, because the main functionality is all about talking to other people.

There are two methods of chat in Slack:
  • channels (group chat),
  • direct message or DM (person-to-person chat).

  INDEX:

1. How to set your Slack display name(windows)
2. How to make a Slack channel private if it's public(windows)
3.Set your status in slack (windows)
4.Edit or clear your status(windows)

 Let’s take a quick look at the user interface.

1. How to set your Slack display name(windows)




  • open slack and sign into the workspace .

  • Click your profile photo or icon on the top right.

  • Select Edit Profile.

  • Enter the name you want to use in the Display name field.
  • Then save your changes.

2.How to make a Slack channel private if it's public(windows)

  • Select the channel you want to make private from the left sidebar.
  • Click the gear icon next to the name of the channel, located at the top of the screen.
Select "Additional options."
Select "Additional options." Devon Delfino/Business Insider

  • Click "Change to a private channel" — if that isn't listed, you'd need to contact an administrator or owner for assistance, otherwise continue to the next step.
  • Click "Change to Private" to confirm your decision.How to make a private Slack channel(windows)


Click the plus sign next to "Channels" in the left sidebar.You can add new Slack channel. Devon Delfino/Business Insider

Add your channel name and toggle on the "Make private" option.Slide to make the channel private. Devon Delfino/Business Insider

  • Click "Create."
You'd be able to add members to the channel by tagging them in the pop-up which appears immediately after creation, or by selecting "Add people" on the channel page at any time.




3.Set your status in slack (windows)

  • From your desktop, click on your profile picture icon in the top right.
  • Click on the Update your status field.
  • Enter a status and select an emoji or choose a suggested status option.
  • Click on Clear after to choose when your status will clear. If you like, tick the box next to Pause notifications to turn off notifications until your status clears.
  • Click on Save.

4.Edit or clear your status(windows)

  • From your desktop, click on your profile picture in the top right.
  • Click on your current status to edit it, or
  • Click on Clear status to remove it.
  • Click on Save.










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