Tux Machines
Posted by Roy Schestowitz on Jan 23, 2023
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=> ↺ How Let's Encrypt accounts are linked to your certificates in Certbot
In theory, starting from Certbot 1.23 you can find out information about your accounts with 'certbot show_account'. In practice, Ubuntu 22.04 LTS still has Certbot 1.21, and show_account doesn't show you one critical piece of information, namely Certbot's local identifier for the account. So instead you have to look under /etc/letsencrypt, where in accounts/acme-v02.api.letsencrypt.org/directory/ you will find one subdirectory per production LE account you have. Each account (ie subdirectory) has a name that's 32 hex digits, which is Certbot's (internal) name for this account. In each account's subdirectory, the meta.json will give you some basic information about the account, currently the creation date and hostname, although not necessarily the email address associated with it (which 'certbot show_account' can retrieve from Let's Encrypt).
=> ↺ Deploy your own Shiny app server with debian
That work inspired me to set up my own home server and to write this guide. Although the sources I found are really helpful, they are lacking a few steps if you set up your own server from scratch, and they are also lacking some sources of where to find when the software gets up to date, providing only old links. Therefore, I decided to make this guide, covering all those topics and keeping a registry of the links, to help myself in the future and to help anybody who want to try it.
=> ↺ How I fixed broken Wi-Fi on my 2012 Mac Mini running Zorin OS
I recently installed Zorin OS Lite on a 2012 Mac Mini. When I booted it up for the first time, the Wi-Fi didn’t work because I didn’t have the drivers. This is how I fixed it.
These steps worked for me, and I hope they’re helpful for you. I suspect these instructions work on many old Macs with other Linux distros like Ubuntu. (In fact, these instructions were inspired by a similar guide, which was itself inspired by an old Ubuntu guide.)
=> ↺ Free up space on your Linux system with this open source tool | Enable Sysadmin
Try the Top Disk Consumer Report Generator to help find files, directories, and deleted files that are consuming unnecessary storage on your system.
=> ↺ How to Install 7-Zip on Debian 11 or 10 - LinuxCapable
7-Zip is a popular open-source file archiving and compression software that allows users to compress and extract files in various formats. It is a versatile tool that can be used on desktop and server environments and is particularly useful for users of Debian Linux. This software can save disk space, reduce file transfer times, and increase security by encrypting and password-protecting files.
=> ↺ Master the lsblk Command: Block Devices Information
The lsblk (pronounced “L-S-block”) command is commonly used to get the list of all the block devices in your system with their information, such as size, type, mount point, etc.
If you are wondering, what are block devices? Then it’s basically files that represent the device connected to your system (except for ram disk).
In this article, you will learn how to list out and get information about all the block devices using the lsblk command and its options (with practical examples).
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