gmolveau

Firefox Dark Background

• How to change the background on Firefox to a dark one on new tab / loading screen ?

Procedure

• Type about:config in the URL bar
• Search toolkit.legacyUserProfileCustomizations.stylesheets and double-click the field to set it to true
• Type about:support in the URL bar
• Look for Profile folder field and click on the open button next to it.

egmontkob

Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators

[ Update 2020-05-31: I won't be maintaining this page or responding to comments anymore (except for perhaps a few exceptional occasions). ]

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Most of the terminal emulators auto-detect when a URL appears onscreen and allow to conveniently open them (e.g. via Ctrl+click or Cmd+click, or the right click menu).

It was, however, not possible until now for arbitrary text to point to URLs, just as on webpages.

alvarow

# Generate a new key
openssl genrsa -out server.key 2048

# Generate a new CSR
openssl req -sha256 -new -key server.key -out server.csr

# Check certificate against CA
openssl verify -verbose -CApath ./CA/ -CAfile ./CA/cacert.pem cert.pem

# Self Signed

bnagy

GPG / Mutt / Gmail

About

This is a collection of snippets, not a comprehensive guide. I suggest you start with Operational PGP.

Here is an incomplete list of things that are different from other approaches:

• I don't use keyservers. Ever.
• Yes, I use Gmail instead of some bespoke hipster freedom service

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!