We take a look at how standard Unix File Permissions work, and look at how to understand the permissions on existing files and folders, but not at how to change them. We also cover the fact that the standard unix file permissions are now only a sub-set of the file permissions on OS X and Linux (OS X also supports file ACLs, and Linux has SELinux as an optional extra layer of security).

TTT 5 of n - File Permissions

Taming the Terminal is a podcast based on the tutorial created by Bart Busschots and explained to Allison Sheridan.

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In this episode of Taming the Terminal, Bart winds up our series within a series all about the Terminal command TMUX.  In this final piece he teaches us first how to string commands together to create the TMUX sessions we want with the screens split and the processes running in each pane as we like them.  After teaching us how to string them together he shows us how to make a little script file we can run so that we can automatically open up our TMUX sessions exactly the way we like them.
This will be the last of our Taming the Terminal episodes for a while, but we'll be back after macOS Big Sur ships and is stabilized. In macOS Catalina the default shell was changed from bash to zsh and it does bring some changes to things we learned earlier in the series but it seems prudent to wait till we're over this big hump getting into Big Sur.
You can find Bart's tutorial shownotes over at ttt.bartificer.net/...
Don't forget, you can download the Taming the Terminal book at podfeet.com/tttbook. The book will be updated with this instalment shortly.

TTT 40 of n – Automating TMUX

This week's episode of Chit Chat Across the Pond was another installment of Taming the Terminal.  Two weeks ago Bart taught us the basics of a technology called `tmux`, or terminal multiplexer that allows you to access the same server in many different ways at the same time.  He covered how `tmux` replaces the deprecated `screen` but he didn't go much further. In this rather light and easy-to-follow installment, he takes `tmux` up a notch and shows us how to create multiple windows, and multiple panes all within a single `tmux` session.  Like I said it was super easy to understand, very visual and fun!
You can listen to this week's installment by searching for Taming the Terminal in your podcatcher of choice or it's included in the full Chit Chat Across the Pond show as well. And as always you can get to Bart's fabulous tutorial shownotes at bartbusschots.ie/...

TTT 39 of n – Advanced TMUX

When Bart first started the Taming the Terminal series in October of 2015, he purposely declared every installment to be "of n" where n was not defined.  It's been 3 years since there was an episode of Taming the Terminal, but today we've got a new one for you.  In Taming the Terminal 36, recorded in 2016, Bart introduced us to a nifty command-line tool called screen.  Screen allowed you to ssh into a server, and start a session but disconnect and come back to it without stopping the processes you were running.
But in the last year, screen was deprecated by Red Hat Linux (which means it's gone from the free CentOS version as well).  The good news is that it was replaced with an even more powerful tool called tmux.  In this installment, Bart walks us through just how tmux solves the same problem as screen, but teases us with the knowledge that this tool has much more to offer.  
It was a super fun episode with lots of surprises (for me at least) and whether you followed along with the first 37 installments or not, I'm sure you'll find it useful as well.
You can find Bart's fabulous shownotes at bartbusschots.ie/....

TTT 38 of n – TMUX (a Screen Alternative)

In 2017 on Taming the Terminal installment 37 of n, Bart taught us about SSH agents and the advantages of using a passphrase to further protect your SSH keys. In the intervening four years, things have changed a bit in macOS, so we decided to do a supplemental update to installment 37. We review a bit about what SSH Keys are (from installment 30) and then discuss how much easier and cleaner things are on macOS with the clean integration of your identity, passphrase and Apple's Keychain. 
You can find the replaced show notes for TTT 37 at ttt.bartificer.net/...
If you've downloaded the Taming the Terminal book, please go to podfeet.com/tttbook to get a fresh version.

TTT 37A of n – SSH Agents

As promised, Taming the Terminal isn't over yet!  Bart Busschots joins us to talk about SSH Agents.  We'll talk about how Apple changed things in El Capitan so that you'll have to log into your server with your passphrase more often, and how Bart has a fix for that problem.  Bart does a great job of reminding us of what we learned about SSH back in parts 29 and 30 of Taming the Terminal so it's easier to get back up to speed to follow along.  And as always, Bart's full tutorial is available at bartbusschots.ie/....

TTT 5 of n - File Permissions

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