CategoryUncategorized

case vs if

I notice that a lot of people are writing tons of ifs instead of use the case operator.

The case operator is much more readable. It can do more work than the ifs. And it should be faster by definition. Unfortunately in ruby it is faster only in > 2.x

With case you compare objects and match multiple values.

Continue reading

Good readings for today

https://github.com/karldray/quantum




Valid docker container/image names

Valid container names are: [a-zA-Z0-9][a-zA-Z0-9_.-]
as pointed here

And probably the valid container names are

hostnameComponentRegexp = match(`(?:[a-z0-9]|[a-z0-9][a-z0-9-]*[a-z0-9])`)

as pointed
here

Ansible multistage vault file

in ‘staging’ file

---
vault_file: 'vault_staging'

in ‘production’ file

---
vault_file: 'vault_production'

in the tasks

- include_vars: "group_vars/{{ vault_file }}"

How to ban lol (League of Legends)

If you want your kid to play outside instead in League of Legends this might help you.

You need to find the ip addresses associated with lol. This is done by visiting this url

Then you need to ban all UDP traffic here is how I have done this with iptables.

I understand that there should be much more simpler way.

if true ; then
/sbin/iptables -A INPUT  -p udp  -s 8.23.24.0/23 -j DROP
/sbin/iptables -A INPUT  -p udp  -s 104.160.128.0/19 -j DROP
/sbin/iptables -A INPUT  -p udp  -s 64.124.200.200/29 -j DROP
/sbin/iptables -A INPUT  -p udp  -s 192.207.0.0/24 -j DROP
/sbin/iptables -A INPUT  -p udp  -s 162.249.72.0/21 -j DROP
/sbin/iptables -A INPUT  -p udp  -s 192.64.168.0/21 -j DROP

/sbin/iptables -A OUTPUT  -p udp  -d 8.23.24.0/23 -j DROP
/sbin/iptables -A OUTPUT  -p udp  -d 104.160.128.0/19 -j DROP
/sbin/iptables -A OUTPUT  -p udp  -d 64.124.200.200/29 -j DROP
/sbin/iptables -A OUTPUT  -p udp  -d 192.207.0.0/24 -j DROP
/sbin/iptables -A OUTPUT  -p udp  -d 162.249.72.0/21 -j DROP
/sbin/iptables -A OUTPUT  -p udp  -d 192.64.168.0/21 -j DROP

/sbin/iptables -A FORWARD  -p udp  -s 8.23.24.0/23 -j DROP
/sbin/iptables -A FORWARD  -p udp  -s 104.160.128.0/19 -j DROP
/sbin/iptables -A FORWARD  -p udp  -s 64.124.200.200/29 -j DROP
/sbin/iptables -A FORWARD  -p udp  -s 192.207.0.0/24 -j DROP
/sbin/iptables -A FORWARD  -p udp  -s 162.249.72.0/21 -j DROP
/sbin/iptables -A FORWARD  -p udp  -s 192.64.168.0/21 -j DROP

/sbin/iptables -A FORWARD  -p udp  -d 8.23.24.0/23 -j DROP
/sbin/iptables -A FORWARD  -p udp  -d 104.160.128.0/19 -j DROP
/sbin/iptables -A FORWARD  -p udp  -d 64.124.200.200/29 -j DROP
/sbin/iptables -A FORWARD  -p udp  -d 192.207.0.0/24 -j DROP
/sbin/iptables -A FORWARD  -p udp  -d 162.249.72.0/21 -j DROP
/sbin/iptables -A FORWARD  -p udp  -d 192.64.168.0/21 -j DROP
fi

here is how I block the website of the “great” game.

/sbin/iptables -A INPUT -d 95.172.69.0/24 -j DROP
/sbin/iptables -A INPUT -d 74.201.71.0/24 -j DROP
/sbin/iptables -A INPUT -d 66.151.54.0/24 -j DROP

Create virtual machines from the command line

install the first one with

virt-install --connect qemu:///system --name=lserver1 --os-type=linux --vcpus=3 --memory=746  --disk size=30,sparse=true,cache=unsafe,format=qcow2,bus=virtio,path=/home/guda/images/lserver1.qcow2 --virt-type=qemu --graphics spice --cdrom=/home/guda/Downloads/ubuntu-15.10-server-amd64.iso --os-variant=ubuntuutopic --network=default,model=virtio  --boot cdrom,hd,network,menu=on

Then clone them

  virt-clone --original lserver1 -n lserver3 -f /home/guda/images/lserver3.qcow2 --connect=qemu:///system

Notes:
check some values for the params for virt-install

  • virt-type: virsh capabilities
  • virt-install –os-variant list
  • download image: http://ubuntu.osuosl.org/releases/15.10/ubuntu-15.10-server-i386.iso

If you don’t want to answer questions during the install here is more reading

Preseed

  • https://gist.github.com/smoser/1057704
  • http://blog.dustinkirkland.com/2011/03/ubuntu-server-quick-install-no.html
  • https://help.ubuntu.com/lts/installation-guide/i386/ch04s06.html

Docker stuff

  • https://github.com/dave-tucker/docker-network-demos/blob/master/multihost-local.sh
  • https://docs.docker.com/machine/

MY iPhone is MINE – after jailbreak

Here is the list of the programs that I use

Activator – shortcuts
OpenSSH
iCleaner Pro 7.3.0 beta from  repository http://exile90software.com/cydia/beta
FlipControlCenter – replace the original shortcut icons
IPPeek – via activator
from: https://cydia.angelxwind.net/
AppSync Unified – you need this to install unsinged ipa files.

=====TERMINALS=======

it has nice list of shortcuts, works bad on ios 9.3.3
MobileTerminal (mine bad choice)  from Karens repo https://cydia.angelxwind.net/    which is on the same code base iOS Terminal form BigBoss

MTerminal works good –  from the BigBoss repo.

http://repo.thireus.com – install recommended ios9/ios8/ios7 hacker tools, this includes “newterm” which is updated through ios9. The hacker package installs a bunch of command line utilities like ping, nmap, get, top wget, etc as well. otherwise if you just want terminal just install newterm.

=============================

AudioRecored2 from http://limneos.net/repo or

AppCake – from http://cydia.iphonecake.com/

Bridge – import music to Music from http://canolli.yourepo.com/

Tried but not using
https://appaddict.org/ios-app/ – trying now
https://www.yourepo.com/repo/canolli/pack/bridge – tring now and want to try those also
killbackground8
vShare
iFile – from here http://www.sinfuliphonerepo.com/

Not working
PasswordPilot – inserts your apple password automatically
LocallApStore from http://system.in-appstore.com/repo

Want to try

http://www.xmodgames.com/

Winterboard, Dreamboard

Nice liste of more apps http://www.islamadel.com/en/notes/8-iphone/14-iphone-apps-and-settings

Under linux I use this command to install ipa files.
ideviceinstaller -i /home/guda/Documents/iphone/ipa/openmaps.ipa
This comes from http://www.libimobiledevice.org/

You have to enable to access to your filesystem, maybe apt-get re-install fuse
here here here

Benchmark the usage of partial/helper/render collection

       user     system      total        real
with collection 19.210000   0.030000  19.240000 ( 19.278860)
with partial 55.260000   3.050000  58.310000 ( 58.442582)
with helper 16.640000   0.020000  16.660000 ( 16.663933)

here is the code

- n = 51_000
- some_array = n.times.collect{'hello'}

- Benchmark.bm do |x|
  - x.report("with collection") do
    = render partial: 'name', collection: some_array, locals: {name: 'hello'}

  - x.report("with partial") do
    - n.times.each do
      = render 'name', name: "hello"

  - x.report("with helper") do
    - n.times.each do
      = prunt "hello"

helper:

  def prunt name
    (
      content_tag(:h1, name) +
      link_to('http://www.dir.bg')
    ).html_safe
  end

more https://github.com/gudata/rendering


		
	

Zaffira B headlight bulb change

The cables should point to the engine (at least on the right headlight). Then turn clockwize, until the curved top points the top

Automation

Know who you are going to meet – https://charlieapp.com/dashboard
https://ifttt.com – :)
https://zapier.com/

http://www.boomeranggmail.com/ – nice features to gmail

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