ufw, firewall ubuntu, uncomplicated firewall

sudo ufw disable

sudo ufw enable

sudo ufw status verbose

Even if error occurs, you can check that ufw is running.

sudo ufw status verbose

sudo service ufw status

ubuntu : changing nodejs -> node

from: http://stackoverflow.com/questions/18130164/nodejs-vs-node-on-ubuntu-12-04

sudo ln -s `which nodejs` /usr/bin/node

mongo error Failed global initialization: BadValue Invalid or no user locale set. Please ensure LANG and/or LC_* environment variables are set correctly.

 Failed global initialization: BadValue Invalid or no user locale set. Please ensure LANG and/or LC_* environment variables are set correctly.


solution:

export LC_ALL=C




mongo --version

from:
http://askubuntu.com/questions/536875/error-in-installing-mongo-in-virtual-machine/537324

MEAN install ubuntu

2016/4/13

from:
https://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/

mongodb:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927

echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

sudo apt-get update

sudo apt-get install -y mongodb-org