install dropal in ubuntu server

So, I found a couple of articles, very practical, that explain how to install drupal in a ubuntu linux from scratch. First one is how to install LAMP http://idroot.net/tutorials/install-lamp-stack-ubuntu-16-04/ and the second one is how to install drupal http://idroot.net/linux/install-drupal-ubuntu-16-04/. Just copy and paste command lines in your ubuntu as root, first the LAMP part and second the drupal article.

first steps with postgresql for inpatients

The following is a bash script that show easy steps for getting started with postgresql and verified in a arch linux distribution. There are also some comments for explaining, ideal for inpatients:

DATA_FOLDER=.data
mkdir myproject
cd myproject

initdb -D $DATA_FOLDER

#TODO DONT DO THIS IN PRODUCTION
sudo chmod -R a+wr /run/postgresql/ 

postgres -D $DATA_FOLDER >logfile 2>&1 &

createdb mydb

Node watch task problems in linux&mac

Some developer tools I'm working with lately, like node watch, listen to changes in a filesystem folder using native system APIs for this. On unix systems I had some trouble with those, but good trouble, let me explain.

In unix systems there is a limit on the number of files being watched at a time b a process. And the kernel won't allow a process to watch too many files at the same time.

This is why, we can have trouble while executing development environments based in node watch (grunt watch, gulp watch, etc) in unix (linux and mac). The name of the error has the code : ENOSPC. It mostly fails or enters in a infinite loop, for example:

grunt watch
Warning: watch ENOSPC

Solution

The solution in linux is the following:

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p