sysbot

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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sysbot

backup dotfiles

• Following will copy all of dot ~/. files and directories (including its contents) directly underneath home directory.
• To avoid copying cache and other local configs, e.g., that of web browser, java apps, etc., preferably query directory size tool under entire home $HOME/, using ncdu $HOME of similar tool.
• Exclude all those large directories using rsync --exclude=.local --exclude=.cache format
• Avoid rsync password, ssh keys, .bash_history, etc. if you are uploading to github, etc.
• rsync home dotfiles and configs as follows:

# in your local machine

sysbot

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

sysbot

# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName

sysbot

Streaming your Linux desktop to Youtube and Twitch via Nvidia's NVENC and VAAPI:

1. With Nvidia's NVENC:

Without scaling the output:

If you want the output video frame size to be the same as the input for Twitch:

ffmpeg -loglevel debug \

sysbot

BenchmarkMutexCache/10-8            10000000	       180 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexCache/100-8           10000000	       187 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexCache/1000-8          10000000	       214 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexCache/10000-8         10000000	       231 ns/op	       0 B/op	       0 allocs/op
BenchmarkMutexCache/100000-8         5000000	       254 ns/op	       2 B/op	       0 allocs/op
BenchmarkMutexCache/1000000-8        1000000	      1159 ns/op	     102 B/op	       1 allocs/op
BenchmarkMutexCache/10000000-8       1000000	      1481 ns/op	     184 B/op	       2 allocs/op
BenchmarkMutexCache/100000000-8      1000000	      1655 ns/op	     187 B/op	       3 allocs/op

BenchmarkSyncMapCache/10-8           5000000	       221 ns/op	       0 B/op	       0 allocs/op

sysbot

Host bastion-*
  ProxyCommand none
  User bao
  ForwardAgent yes
  Tunnel no
  SendEnv LANG LC_*
  HashKnownHosts no
  Compression yes
  ServerAliveInterval 600
  UserKnownHostsFile ~/.ssh/known_hosts

sysbot

Keybase proof

I hereby claim:

• I am sysbot on github.
• I am sysbot (https://keybase.io/sysbot) on keybase.
• I have a public key ASAVzKVs633NS414pz-lV1M3gM22eA6PlCQ0mLFrJHdSIAo

To claim this, I am signing this object:

sysbot

package join

import (
	"fmt"
	"strings"
	"testing"
)

var (
	testData = []string{"a", "b", "c", "d", "e"}

sysbot

Embedded Rust on STM32F4

My notes from implementing Job Vranish's excellent guide.

Follow along with the guide above, getting rustc from rustup or similar:

rustc 1.0.0-nightly (dcaeb6aa2 2015-01-18 11:28:53 +0000)
binary: rustc
commit-hash: dcaeb6aa23ecba2dc2af870668a9239136d20fa3

commit-date: 2015-01-18 11:28:53 +0000