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install instructions on systemtap and Ubuntu Kernel

sudo apt-get install gcc systemtap

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C8CAB6595FDFF622

codename=$(lsb_release -c | awk  '{print $2}')
sudo tee /etc/apt/sources.list.d/ddebs.list << EOF
deb http://ddebs.ubuntu.com/ ${codename}      main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-security main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-updates  main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-proposed main restricted universe multiverse
EOF

sudo apt-get update
sudo apt-get install linux-image-$(uname -r)-dbgsym

https://github.com/Pithikos/docker-enter

• install jekyll
  sudo apt-get install jekyll
• configure github pages
• read blog from github pages

interpreter, cli, debugger, ...

xdebug, nginx for docker?

for trusty64

sudo apt-get install php5 # 5..5.x
sudo apt-get install php5-cli
sudo apt-get install phpunit # 3.7.x

for wily64

• php 5.6.x
• phpunit 4.7.x

ack

sudo apt-get install ack-grep 

add to .vimrc

Plugin 'mileszs/ack.vim'

sudo apt-get install libfcgi0ldbl

the lib includes the executable cgi-fcgi

which is handy for talking to fcgi directly:
http://stackoverflow.com/questions/30238602/how-to-execute-a-php-file-using-a-php5-fpm-pool-socket

Start as simple as running a syntax check only for the playbooks.

Travis-Ci supports 3 different build environments. This is nicely explained in this document.
Usage of any other build environment requires containers.
To test the ansible scripts against many different distributions or to test against the latest distributions (Ubuntu 16.04 for example) containers are required.

There should be a test procedure which runs locally first. In case the tests pass the code can be pushed to remote.
Pushing to remote and test if things are working on Travis-Ci is a bad idea.

curl -sS https://getcomposer.org/installer | php
sudo mv composer.phar /usr/local/bin/composer

code completion (IntelliSense) and navigation

for any code completion in vim to work the omnicomplete feature is needed.
omnicomplete is available since vim 7.

filetype plugin on
set omnifunc=syntaxcomplete#Complete

Python

different options for python are available.
all of them need vim to be compiled with the pythoninterp.
check vim for +python or +python3:

vim --version

• pythoncomplete plugin
• jedi-vim
• YouCompleteMe

sudo apt-get install python3-pip
pip3 install future frozendict

git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
vim +PluginInstall +qall
cd ~/.vim/bundle/YouCompleteMe
git submodule update --init --recursive

sudo apt-get install cmake
cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer

ctags

install exuberant-ctags

apt-get install exuberant-ctags

navigate ctags with tagbar

enable exuberant-ctags

let g:tagbar_ctags_bin = '/usr/bin/ctags-exuberant'

project view

source-code browser NerdTree

snippets

for code snippets UltiSnips is great.

syntax highlighting

syntax on

check syntax and inspect

use syntastic

run and test

:make

email
name
difftool

the pre-installed erlang and elixir versions done with kerl and kiex causing the issue

kerl list installations
17.0
17.1
17.3
17.4
17.5
18.0
18.1
18.2
18.2.1
R14B02
R14B03
R14B04
R15B
R15B01
R15B02
R15B03
R16B
R16B01
R16B02
R16B03
R16B03-1

kiex list

kiex elixirs
   elixir-1.0.3
=* elixir-1.0.4

# => - current
# =* - current && default
#  * - default

short intro into inotify on infoq article

apt-get install inotify-tools

add in system-tools

• Delete all containers
  docker rm $(docker ps -a -q)
• Delete all images
  docker rmi $(docker images -q)

for cases an image has more than one tag
docker images <repository-name> | tail -n +2 | awk '{ print $1 ":" $2}' | xargs docker rmi

• Docker package
  https://docs.docker.com/engine/installation/linux/ubuntulinux/
• Ubuntu package

sudo apt-get install -y docker.io

sudo usermod -aG docker <your username>
sudo service docker start
systemctl enable docker

open the R interpreter (from the command line: R) and run install.package("Rcmdr") in the interpreter. Once this finishes, then run library(Rcmdr).
Allow it to install missing/updated dependencies.

git clone git://git.sv.gnu.org/coreutils

if ubuntu 14.04:
maven 3.1, append to .profile

export M2_HOME=/usr/local/apache-maven-3.1
export M2=$M2_HOME/bin
export MAVEN_OPTS="-Xms256m -Xmx512m"
export PATH=$M2:$PATH

kernel config

build a custom kernel from source:
http://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/ch08.html

/boot/config-4.8.0-32-generic

kernel parameters

Listing all available kernel parameters

Using "sysctl -a", the full list of kernel parameters that can be controlled through the sysctl mechanism is displayed, together with their current setting.

Manual setting of kernel parameters

The "sysctl" command can be used to change a kernel setting, e.g.

sysctl -w net.ipv4.conf.eth0.rp_filter=1

These changes affect the currently running kernel. They will be lost on reboot.
To change settings permanently, add an appropriate line to the /etc/sysctl.conf file which is processed during system startup through the /etc/init.d/boot.sysctl script.