An Introduction to Go (CERN)

https://speakerdeck.com/campoy/an-introduction-to-go-cern

git rebasing

git fetch origin
git rebase -i origin/master
git push --force-with-lease

Ubuntu tips

Hold down the control key to see the Ubuntu Unity keyboard shortcuts

Install Unity tweak tool to customize your Unity desktop env
sudo apt-get install unity-tweak-tool gnome-tweak-tool
unity-tweak-tool

Set the location and visibility of the dock

cslc compilation

On Ubuntu 
 1. install Boost
Download boost
https://www.boost.org/doc/libs/1_62_0/more/getting_started/unix-variants.html

https://codeyarns.com/2017/01/24/how-to-build-boost-on-linux/


 
 undefined reference to `intToString[abi:cxx11](int)'

 https://stackoverflow.com/questions/39826917/boost-build-fails-c11-feature-checks-when-using-custom-gcc-4-x-or-5-x?noredirect=1&lq=1

https://docs.computecanada.ca/wiki/GCC_C%2B%2B_Dual_ABI


https://stackoverflow.com/questions/39826917/boost-build-fails-c11-feature-checks-when-using-custom-gcc-4-x-or-5-x?noredirect=1&lq=1


$ echo "using gcc : 5.4 : /usr/bin/g++-5 : -std=c++11 ;" > ./tools/build/src/user-config.jam



Let's assume for the sake of this example that:

• You want to build Boost with GCC 5.4
• The g++ 5.4 binary is at /some/where/g++-5.4
• You've downloaded the Boost sources and unpacked them into /path/to/sources/of/boost-1.62.0/
• (Perhaps) you want to install Boost to /dest/path
• You have N cores (so you want to parallelize the build N-ways)

Now:./b2 install --prefix=--prefix=/opt/local

1. cd /path/to/sources/of/boost-1.62.0/
2. Booststrap the build system by running ./bootstrap.sh
3. echo "using gcc : 5.4 : /usr/bin/g++-5 : -std=c++11 ;" > ./tools/build/src/user-config.jam
4. ./b2 --prefix=--prefix=/opt/local --toolset=gcc-5 -j 4 define=_GLIBCXX_USE_CXX11_ABI=0
5. ./b2 --prefix=--prefix=/opt/local --toolset=gcc-5 -j 4 (N being the number of cores on your system)
6. ./b2 install --prefix=/opt/local
7.  
8.  
9.  ./b2 --prefix=--prefix=/opt/local --toolset=gcc-5 -j 4 define=_GLIBCXX_USE_CXX11_ABI=0

wget https://www-eu.apache.org/dist//xerces/c/KEYS
gpg --import < KEYS
wget https://www-eu.apache.org/dist//xerces/c/3/sources/xerces-c-3.2.2.tar.gz

// Compare the following sha256 to https://www-eu.apache.org/dist//xerces/c/3/sources/xerces-c-3.2.2.tar.gz

sha256sum xerces-c-3.2.2.tar.gz
dd6191f8aa256d3b4686b64b0544eea2b450d98b4254996ffdfe630e0c610413  xerces-c-3.2.2.tar.gz

cd xerces...
./configure
make
sudo make install
$ ls /usr/local/lib/
libxerces-c-3.2.so*  libxerces-c.la*  pkgconfig/  python3.5/
libxerces-c.a         libxerces-c.so@  python2.7/




ELK Stack

https://github.com/logstash-plugins/logstash-patterns-core/blob/master/patterns/grok-patterns

https://www.elastic.co/guide/en/logstash/current/plugins-filters-grok.html

https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-elk-stack-on-ubuntu-14-04#set-up-filebeat-(add-client-servers)

https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch-logstash-and-kibana-elk-stack-on-ubuntu-14-04

https://www.digitalocean.com/community/tutorials/adding-logstash-filters-to-improve-centralized-logging

https://www.digitalocean.com/community/tutorials/how-to-map-user-location-with-geoip-and-elk-elasticsearch-logstash-and-kibana

https://github.com/kkos/oniguruma/blob/master/doc/RE

BASH history time

https://askubuntu.com/questions/391082/how-to-see-time-stamps-in-bash-history

add to your .bash_profile

export HISTTIMEFORMAT="%d/%m/%y %T "