mike2718

泉盛UV-K5功能设置笔记

切换VFO-A、VFO-B和存储模式

选择操作频段

johnjeffers

Ubuntu 20.04 on a 15" Retina MacBook Pro (Mid-2014)

These are notes from my efforts to get Ubuntu 20.04 installed on my older MacBook Pro. I'm making this gist public in the hopes that it's helpful to others.

I did a Minimal install, but selected the option to install additional 3rd-party drivers.

Wifi doesn't work during the install (because it requires a 3rd-party driver), so you won't be able to choose to download updates while installing. No big deal, run a software update after the install.

The installer takes about 25 minutes to complete. Post-install, most things work. The only driver I had to manually install was for the FaceTime camera. More on that below.

jstanley0

# list pid, execution time, and query text for running queries
def pg_ps
  now = Time.now
  ActiveRecord::Base.connection.execute("SELECT pid, query, query_start FROM pg_stat_activity WHERE state='active'").to_a.each do |q|
    printf "%8d %10.2f  %s\n", q['pid'], now - DateTime.parse(q['query_start']), q['query']
  end
  nil
end

# cancel the current query for the given process

PavloBezpalov

root# apt-get update
root# apt-get upgrade

// dependencies for Ruby
root# apt-get install -y git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev \
  libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev \
  libpcre3-dev unzip

// Node.js v7
root# curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -

techwhizbang

require 'rubygems'
require 'rspec'

module Enumerable
  def inject(*args, &block)
    if(args.size == 2)
      inject_binary_operation(args[0], args[1], self)
    elsif(args.size == 1 && !block_given?)
      inject_binary_operation(self.first, args[0], self.drop(1))
    else