techinfo — Notes and Useful Info

Articles Index and Hashtags

Sat, 03 Oct 2020 16:05:24 +0000

Note: keep this at top of blog list by updating it's date in post metadata. Blog Index 01: Articles Index and Hashtags Page 1 02: Apps 03: MathJax quirks/issues in Write.as 04: WSL 05: Search Test 06: Custom Javascript/CSS Coding 07: Text-Only Sites 08: DMV Tests 09: Nextcloud 16.04.1 Install on Debian 9 10: Nextcloud Docker Notes 11: Notes Page 2 12: Nextcloud Notes 13: WA WF Code Examples 14: Phone Tips 15: Cosmology-Followup 16: Blogs Posts 17: Fediverse Followup 18: Tech Followup 19: Priority To Do 20: write.as usage notes 21: WriteFreely info, setup, and config Page 3 22: Win1809 23: Science Projects Ideas 24: Git 25: MathJax and LaTeX 26: Latest Cosmology Results 27: WebDev 28: CyberSecurity links 29: Linux 30: e6430 31: Android Dev Page 4 32: Cloudready 33: Winlinks 34: Ideas for More Secure or Anonymous Payments Online 35: Python 36: Test Post 37: Physics Links 38: CMB 39: Cosmology

Nextcloud Notes

Tue, 27 Aug 2019 22:13:19 +0000

Nextcloud 23 Installation on Debian – Emanuel Pina How to install Nextcloud with SSL using snap; either thru Let's Encrypt or self-signed certificate nextcloud 21 installation on ubuntu | Nextcloud 20 Installation on Ubuntu – Emanuel Pina |

How to install NextCloud 18 on Ubuntu 16.04/18.04/19.04/19.10 – Marksei | How to install Nextcloud 18 on Ubuntu Server – TechRepublic | The complete guide to installing Nextcloud on Debian 10 Nice article on installing Nextcloud with nginx (reverse proxy) and Let's Encrypt | more nc from Rog | Nextcloud backup/restore shell scripts Nextcloud security scanner | Nextcloud download files server | Nextcloud 17 online user manual | Using the OCC command |

To backup Nextcloud: there are four major components to deal with: folder nextcloud/config folder nextcloud/data folder nextcloud/theme folder nextcloud/config (added by me) (also possibly .htaccess) The database (can be MySQL/MariaDB, SQLite, or PostgreSQL) It's possible to manually back up folders, files, and the database. Have a look at the Nextcloud documentation to find out how to achieve that. It basically involves shutting down the application, letting it store its internal state on disk, backing up all files, and restarting Nextcloud. from: How to back up Nextcloud with Bareos – Nextcloud

Followup: Header Strict-Transport-Security (HSTS) in /etc/apache2/conf-available/ssl-params.conf

Security guidance doc | Security checker |

NextCloud Bookmarks has a browser bookmarklet.

access nextcloud using webdav and php (Be sure to create and use an app password) https://blog.sleeplessbeastie.eu/2018/06/11/how-to-display-upcoming-events-in-nextcloud-calendar-using-text-based-terminal-emulator/ curl api call to download file using GET | Basic APIs sabre/xml http://sabre.io/xml/ https://blog.sleeplessbeastie.eu/search/?query=nextcloud google: install nextcloud on local computer How To Install and Configure Nextcloud on Ubuntu 18.04 | DigitalOcean | caltlgin NC install procs | webhostinghero |

To share a NextCloud image file, right-click on file to get link. You probably need to share file first. The image displays in other apps ok. The link will look something like this (it will differ with different NC providers): https://your_nextcloud.org/apps/files_sharing/publicpreview/TGgDBx69pBN6pTX?x=1522&y=626&a=true&file=filename.jpg&scalingup=0

NC's Apps info page | RSS News app | Carnet |

Access files via WebDav with Microsoft Windows How to import Firefox bookmarks to Nextcloud using API
NextCloud API docs NextCloud Notes integration with Joplin and NextNote

“You may customize a Gallery album with a simple text file named gallery.cnf, which contains parameters structured using the Yaml markup language. You may have multiple gallery.cnf files; you need one in your own root Nextcloud folder (your Home folder) that defines global features, and then you may have individual per-album gallery.cnf files if you want to define different behaviors in different albums.” Docs source

How To Install and Configure Nextcloud on Ubuntu 18.04; DigitalOcean | How to install Nextcloud on shared hosting | How To Setup A Nextcloud Server In Ubuntu | Nextcloud On A Raspberry Pi 3+, by Kev Quirk | How to Install Nextcloud on UberLab | NextCloud install script for Ubuntu 16.04 |

A filedrop is available: “You may create your own special upload directories so that other people can upload files to you without having to log in to the server, and without being a Nextcloud user. They will not be allowed to see the contents of this directory, or to make any changes.' Docs source

Apparently, markdown syntax for images does not work when Note is viewed in a browser page (apparently IF the image is hosted external to the NC instance). Images do show when viewing the note in NextCloud. This is true for all NextCloud instances I've used. However, see this. Apparently, the reason that image displays ok on a webpage is that the image file is hosted on the nextcloud instance. This was confirmed on both nixnet and snopyta – images display ok when note is viewed as a web page IF the image file is hosted on the NC instance where the note is posted. CodiMD, HackMD, write.as, and writefreely notes do not have this limitation.

Provider Features Comparison:

Feature	Snopyta	CNow	OwnCube	Hostiso	Nixnet
MD Notes	Yes	Limited	Rich Text editor	Limited	Yes
Collabora	No	No	No	Yes	No
Storage	500 mb	5 gb	5 gb	3 gb	10 gb
Bookmarks	Yes	No	Yes	Yes	No
Gallery	Yes	Yes	Yes	Yes	Yes
Carnet	No	No	No	No	Yes
Performance	Fast	Fast	Medium	Slow	Slow

ocloud.de has an admin demo, so you can install apps that you want to learn about. The menus are in German though. Their free version gives 1gb space but Notes and the markdown editor are not included.

Tags: #devel #techinfo

Phone Tips

Thu, 06 Jun 2019 14:16:19 +0000

How I checked the battery health of my Android phone – jlelse

Useful: Auto Sync Off, manual sync | Location Off until needed | Data Saver On | Turn off Digital Wellbeing |

Long tap the Home button to open Google Assistant

Uninstall Digital Wellbeing with ADB

Hashtags: #techinfo

Tech Followup

Sun, 24 Feb 2019 05:09:10 +0000

Embed Interactive Jupyter Notebooks in Static Websites for Free, using gists | MyBinder | CoCalc online Jupyter notebooks | https://voila.readthedocs.io/en/stable/index.html From notebooks to standalone web applications and dashboards. Voilà allows you to convert a Jupyter Notebook into an interactive dashboard that allows you to share your work with others. Hosting Jupyter Notebook on GitHub with Binder

Internxt Drive (formerly X Cloud) client-side encrypts your files, and files are encrypted in transit and at rest. Only the user knows the decryption key of the files since his or her password is used to encrypt and decrypt the files, and is only known by the user. Additionally, unlike in any other service (eg Tresorit, pCloud, Sync), Internxt Drive breaks apart user files and a server only hosts file shards, never complete files. This adds an extra layer of security to the service against hackers or any other third-party. [source] | HN on Internxt | Internxt as alternative to Tresorit | Internxt X Cloud combines peer-to-peer filesharing, end-to-end encryption, and the blockchain to create a decentralized cloud storage platform. X Cloud is the user-facing part of Internxt’s service, while the backbone of the operation is X Core. This is a decentralized network of hosts, offering their computing and storage capacity to X Core and X Cloud. These hosts are incentivized to participate with the Internxt token, INXT. [source] What is decentralized cloud storage? Decentralization allows Drive to provide a completely unique cloud storage service, where files are encrypted, fragmented and each fragmnent is hosted in servers present all over the world. This allows us to provide higher levels of privacy, eco-friendlyness and reliability. These servers are ran by high-quality operators running our exclusive Internxt Core program. Internxt Core is ran on already existing hardware, leveraging unused storage space, and thus providing a highly green cloud storage service. Since we count with storage servers everywhere in the globe, we also leverage latency to reduce energy consumption when sending you your files. [source] HackerNoon article

40+ High Quality Free Resources for Web Development Note Carbon, among others Stavros quickly create a blog with new.css, lektor, and gitlab

Free Azure static web apps | Azure CosmosDB free tier | Azure free account/tier details | How to be sure you're on Azure Free Tier |

JavaScript Visualized: Promises & Async/Await | Fetching With Async/Await | How does async/await work? | bigskysoftware/htmx: htmx – high power tools for HTML

exim commands | php mail vs smtp |

wego: Use this open source tool to get your local weather forecast The wttr.in project is a web-based wrapper around wego. It provides some additional display options. One cool thing about wttr.in is that you can fetch one-line information about the weather with curl. I have a little shell function called get_wttr that fetches the current forecast in a shortened form. get_wttr() {curl -s "wttr.in/Pittsboro?format=3"}

tools for developers, many good followup ideas |

The HTTP headers you don't expect; strange header; curl -I https://techcrunch.com

Apache: Allow specified IP addresses but otherwise require username/password: Ref1 | Ref2 | Ref3 |

How to stack HTML elements

Feeds: SHIFT14 |

AWS Lightsail upgrade Ubuntu 16.04 LTS to 18.04 LTS – nixCraft Ubuntu Upgrades – Community Help Wiki How to Upgrade to Ubuntu 18.04 Bionic Beaver – CloudBooklet Manually Upgrade Ubuntu 16.04 | InMotion Hosting ubuntu – Is it safe to run do-release-upgrade on a cloud VM? – Server Fault Upgrading an End-of-Life Ubuntu Server 2 Ways to Upgrade Ubuntu 18.04 To Ubuntu 20.04 (Graphical & Terminal), has some very good points

UbuntuUpdates – PPAs & 3rd Party Repositories

Best Online Tools To Know Everything About a Website, by Labnol Personal security checklist | reddit thread | Good Devel Notes by Category

Web Scraping 101 with Javascript and NodeJS

Ubuntu: Creating a self-signed SAN certificate using OpenSSL – Fabian Lee Ubuntu: Creating an alias for common commands under bash – Fabian Lee

How to safely clean Ubuntu | CSS:visited selector | TLD-list.com best initial domain name registration prices, best renewal prices

Web Server Security Series | Web Server Security Handbook | other great security info |

google search: add external bootable hard drive to laptop linux or boot linux on laptop from external hard drive https://askubuntu.com/questions/16988/how-do-i-install-ubuntu-to-a-usb-key-without-using-startup-disk-creator#942312 https://www.tecmint.com/install-linux-os-on-usb-drive/ https://www.linux.org/threads/installing-linux-ubuntu-on-external-hdd.13070/ https://www.zachpfeffer.com/single-post/Install-Ubuntu-on-an-External-Hard-Drive

privatebin markdown test use rentry.co pw

HTTPS configuration test https://www.ssllabs.com/ssltest/ We recommend that servers have at least an A rating. If they have less, you might look for a better server. If they have A+ you are on a good site! https://securityheaders.io/. Here we also recommend an A rating or better. [from privatebin faq] privatebin hosted servers

observatory.mozilla.org Site safety and security checker. Options: Don't include my site in the public results, Force a rescan instead of returning cached results, and Don't scan with third-party scanners | https://securityheaders.com/ | Qualyx SSL test |

Other sites like privacytools.io

Tech blog: Ctrl.blog

raspberry pi ideas

Nextcloud dev manual Esp. see Security Guidelines section (XSS, etc)

Why You Should Own Your Own Domain, by Kev Quirk Note the caution about WhoIs privacy HN WhoIs privacy search | example info |

Append /api/nodeinfo or /api/nodeinfo/2.0.json to a domain name to get listing; example

Mobile switch: How I canceled Verizon and cut my phone bill in half

What is CORS? Complete Tutorial on Cross-Origin Resource Sharing Async functions, making promises friendly | Web Fundamentals | Using promises – JavaScript | MDN

Motorola Moto G7 and One lines are getting Google’s call screening feature Port # to Verizon FAQ | Switch to Verizon |

Vanilla JS toolkit

iDrive backup looks really good; Jon Watson rec Probably compare to Tresorit.

How to become a wikipedia editor

Q. How to check if remote repository has changed and I need to pull? A. First use git remote update, to bring your remote refs up to date. Then you can do git status -uno which will tell you whether the branch you are tracking is ahead, behind or has diverged. If it says nothing, the local and remote are the same. If local is behind remote, it will automatically do a pull to bring local up-to-date. [source]

Cleaning your GitHub profile with a simple Bash script

https://caniuse.com/ Shows browser version support for various CSS, HTML, Javascript, security, etc commands/features

https://httpbin.org/ request and response service

Build Your First Twitter App Using PHP in 8 Easy Steps | Twools | Twint, twitter scraper w/o API or login |

The Ultimate Superuser's Guide to uBlock Origin – Make Tech Easier

outline.com review bookmarklet: javascript:(function()%7Bwindow.location.href %3D 'https%3A%2F%2Foutline.com%2F' %2B window.location.href%7D)() https://genius.com/web-annotator | nice Genius example |

The 5 Best Rescue and Recovery Disks for a Windows System Restore The Essential Tools for Programmers, by Amit Agarwal How to Use Windows 10’s OpenSSH Client Instead of PuTTY How to create a group email in Gmail The 7 Best Windows Dark Themes for your Eyes

Regular expressions: https://edsaav.com/regular-expressions

Guide to Web Authentication 42 Privacy Tools and Products To Protect Your Data in 2019 Using uMatrix to replace NoScript https://fediverse.blog/~/LuftHans/using-u-matrix-to-replace-no-script Color scale generator, by Hayk https://hihayk.github.io/scale/ Panopticlick – browser tracking tester https://panopticlick.eff.org/ Services which support 2FA https://twofactorauth.org/ https://americanexpress.io/do-not-run-dockerized-applications-as-root/ https://ebookfoundation.github.io/free-programming-books/

Create animated GIFs from MP4 with FFmpeg | ffmpeg complete guide |

Cloud storage backup: Backblaze, 10gb free | appl w cloudflare |

Tags: #techinfo #followup