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Google Authenticator
Duo Security
Azure Multi-Factor Authentication
OpenSSL
Let's Encrypt
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Ensighten
explainshell
cheat.sh
regular expressions 101
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Authy is recommended for individuals who seek a user-friendly and secure way to manage their two-factor authentication across multiple devices and platforms. It is suitable for both beginners and experienced users who prioritize security and convenience in their digital security practices.
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Download an authenticator app (Google Authenticator, Authy, or Microsoft Authenticator). - Source: dev.to / 7 months ago
Authy - Two-factor authentication (2FA) on multiple devices, with backups. Drop-in replacement for Google Authenticator. Free for up to 100 successful authentications. - Source: dev.to / over 2 years ago
Https://authy.com/ Acquired by Twilio. I'm not even sure if they still update it, last blog post was 3 years ago. - Source: Hacker News / over 2 years ago
2FA apps such as Google Authenticator and Authy randomly generate a code every minute or so, which is matched to a specific key associated with your login. In essence, this means that whenever a login asks for your 2FA code, it knows which number to expect and will only unlock if that correct number is entered. Source: over 2 years ago
You can also set up the Authy authenticator app on a PC, so you don't have to use a mobile app at all, but use a PC app instead :). Source: almost 3 years ago
There is https://explainshell.com/ not in terminal but should do the trick. - Source: Hacker News / 6 months ago
Explainshell paste a bash command and it explains every part. - Source: dev.to / about 1 year ago
Explainshell.com (Explains any Linux command). - Source: dev.to / about 1 year ago
I've found this tool handy for faster-than-man explanations of various CLI invocations: https://explainshell.com/ Sadly, it hasn't been updated in years. - Source: Hacker News / over 1 year ago
Https://explainshell.com/ also is good for explaining commands. - Source: Hacker News / over 2 years ago
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
cheat.sh - The only cheat sheet you need Unified access to the best community driven documentation
Duo Security - Duo Security provides cloud-based two-factor authentication. Duoโs technology can be deployed to protect users, data, and applications from breaches, credential theft, and account takeover.
regular expressions 101 - Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
Azure Multi-Factor Authentication - Azure Multi-Factor Authentication helps safeguard access to data and applications while meeting user demand for a simple sign-in process.
crontab guru - The quick and simple editor for cron schedule expressions by Cronitor