Install Scala 2.11.8
$ sudo apt-get remove scala-library scala
$ sudo wget www.scala-lang.org/files/archive/scala-2.11.8.deb
$ sudo dpkg -i scala-2.11.8.deb
Check Scala version
$ scala -version
jamestung1990
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # -*- mode: ruby -*- | |
| # vi: set ft=ruby : | |
| $master_cpus = 2 | |
| $master_memory = 2048 | |
| $num_workers = 3 | |
| $worker_cpus = 4 | |
| $worker_memory = 4096 | |
| $common_script = <<-SCRIPT |
alexislucena
/ install-scala-sbt-and-java-on-ubuntu.md
Created
December 5, 2016 12:35
Ubuntu: Install Scala, SBT and Java on Ubuntu 16.04
These instructions are derived from those in the Mesos Community Documentation.
Do the below as root.
cat <<EOF >> /etc/apt/sources.list.d/mesosphere.list
deb http://repos.mesosphere.com/ubuntu xenial main
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #!/bin/bash | |
| yum install wget | |
| wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm | |
| rpm -ivh epel-release-6-8.noarch.rpm | |
| yum install byobu | |
| byobu-enable | |
| # Default Key Bindings | |
| # F2 -> Create new window |
bastman
/ docker-cleanup-resources.md
Created
March 31, 2016 05:55
docker cleanup guide: containers, images, volumes, networks
Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...
// see: https://github.com/chadoe/docker-cleanup-volumes
$ docker volume rm $(docker volume ls -qf dangling=true)
$ docker volume ls -qf dangling=true | xargs -r docker volume rm
hest
/ gist:8798884
Created
February 4, 2014 06:08
Fast SQLAlchemy counting (avoid query.count() subquery)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| def get_count(q): | |
| count_q = q.statement.with_only_columns([func.count()]).order_by(None) | |
| count = q.session.execute(count_q).scalar() | |
| return count | |
| q = session.query(TestModel).filter(...).order_by(...) | |
| # Slow: SELECT COUNT(*) FROM (SELECT ... FROM TestModel WHERE ...) ... | |
| print q.count() |
muloka
/ ansible-lineinfile-examples.yml
Created
November 28, 2013 04:26
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ## credit: http://fabian-affolter.ch/blog/the-lineinfile-module-of-ansible/ | |
| --- | |
| - hosts: alpine_install | |
| user: root | |
| tasks: | |
| # - name: create a complete empty file | |
| # command: /usr/bin/touch /test/test.conf | |
| - name: create a new file with lineinfile |