sysbot

Tricks to add encrypted private SSH key to .travis.yml file


To encrypt the private SSH key into the "-secure: xxxxx....." lines to place in the .travis.yml file, generate a deploy key then run: (to see what the encrypted data looks like, see an example here: https://github.com/veewee-community/veewee-push/blob/486102e6f508214b04414074c921475e5943f682/.travis.yml#L21

base64 --wrap=0 ~/.ssh/id_rsa > ~/.ssh/id_rsa_base64
ENCRYPTION_FILTER="echo \$(echo \"-\")\$(travis encrypt veewee-community/veewee-push \"\$FILE='\`cat $FILE\`'\" | grep secure:)"
split --bytes=100 --numeric-suffixes --suffix-length=2 --filter="$ENCRYPTION_FILTER" ~/.ssh/id_rsa_base64 id_rsa_

sysbot

language: ruby
rvm:
- 1.9.3
before_install:
- openssl aes-256-cbc -K $encrypted_755628117be5_key -iv $encrypted_755628117be5_iv
  -in travis_ci_ec2.pem.enc -out ~/.ssh/travis_ci_ec2.pem -d
- chmod 600 ~/.ssh/travis_ci_ec2.pem
install:
- bundle install --without vagrant
- bundle exec berks install

sysbot

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

sysbot

You can find the MAC address for LAN1/eth0 (not the BMC MAC) via the SuperMicro IPMI interface by running the following command:

$ ipmitool -U <redacted> -P <redacted> -H 10.4.0.10 raw 0x30 0x21 | tail -c 18
00 25 90 f0 be ef

sysbot

# A demonstration of the CurveCP handshake protocol. This protocol has many
# favorable security properties described at http://curvecp.org.
#
# In addition to its security advantages, it has the following favorable properties:
# * Needs only 2 messages (1 from client, 1 from server) before application
#   messages can be exchanged (3 before the server can send application messages)
# * Does not require the server to keep protocol state between handshake messages.
#
# An overview of the protocol:
#

sysbot

package main

import "fmt"

type F func(i int) int

func (f F) compose(inner F) F {
	return func(i int) int { return f(inner(i)) }
}

sysbot

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

sysbot

#!/usr/bin/env ruby

require 'json'
require 'yaml'

input = $stdin.read

data = YAML::load(input)
json = JSON.dump(data)

sysbot

/usr/sbin/tcpdump -nnt -r tmp.pcap | egrep '[S]' | awk -F '.' '{print $1"."$2"."$3"."$4}\' | sort | uniq -c | sort -nr | head

sysbot

require 'ipaddr'

def crc16(buf)
  crc = 0x00
  buf.each_byte do |b|
    print "b: #{b}\n"
    # ^ binary xor
    # >> binary right shift
    # & bitwise 'AND'
    crc = ((crc >> 8) & 0xff) ^ CRC_LOOKUP[(crc ^ b) & 0xff]