Ubuntu MATE: Custom time format for clock panel widget
- Run
dconf-editor(as your user) - Go to
org / mate / panel / objects / clock / prefs - Change the key
formattocustom - Change the key
custom-formatto astrftimeformat string Show archive.org snapshot
A good, space-saving format string for German users is %d.%m. %H:%M. This shows the current date, month, hour and minute (e.g. 24.12. 23:59).
Related cards:
Remove resource fork files from a FAT volume on MacOS
Be careful!
The following solution will delete files on a volume. If you don't know exactly what you're doing, you can run into big trouble with your computer.
I play mp3 files on my car stereo that are stored on a SD-C...
Why you can't use timezone codes like "PST" or "BST" for Time objects
Rails' ActiveSupport::TimeWithZone objects have both a timezone code and offset, e.g. Thu, 28 Mar 2019 16:00:00 CET +01:00. Ruby's stdlib TZInfo also has time zones, but with different identifiers.
Unfortunately, not all timezone codes can b...
Organizing custom Date(Time) formats
Large Rails projects tend to define multiple custom ways to format Dates or DateTimes. This often leads to duplicated format strings, wrong formats and unnecessary introduction of new formats.
to_fs also supports to refer to those formats b...
How to not die with ActionView::MissingTemplate when clients request weird formats
When HTTP clients make an request they can define which response formats they can process. They do it by adding a header to the HTTP request like this:
Accept: application/json
This means the client will only understand JSON respon...
Customizable date (and time) picker: Rome
Datetime picker that offers:
- simple UI without a specific framework
- several of customization options
- allows custom date/time validations
Localization happens via moment.js (which is a Dependency anyway).
However, you won't be happy trying...
Guide to localizing a Rails application
Localizing a non-trivial application can be a huge undertaking. This card will give you an overview over the many components that are affected.
When you are asked to give an estimate for the effort involved, go through the list below and check wh...
How Rails and MySQL are handling time zones
When working with times and dates in Rails applications, you need to deal with the following problem:
- In Rails,
Timeobjects have a time zone. You can get the zone name by doingtime_object.zone. - This zone is considered when doing time ca...
How to create Excel sheets with spreadsheet gem and use number formats for cells like money or date
The following snippet demonstrates how you could create excel files (with spreadsheet gem) and format columns so that they follow a specific number format like currencies or dates do.
require 'rubygems...
Ubuntu MATE: Shortcut launcher for a web application
For some years Google Chrome has allowed you to add desktop icon for any web page by going to Tools / Add to desktop. Unfortunately this doesn't work reliably on Ubuntu MATE with recent Chromes: The icons could not be moved away from the desktop...
How to: Build a "generic observer" widget for the awesome window manager
If you want a widget for awesome that runs a command regularly (every X seconds) and puts the output into your awesome panel, this is for you.
Put the code below into your ~/.config/awesome/rc.lua. It supplies tw...