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Install rvm

sudo apt-get install software-properties-common

1. Add the PPA and install the package

Open a terminal (Ctrl+Alt+T) and run:

sudo apt-add-repository -y ppa:rael-gc/rvm

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1. revert merge ref

git reset --merge commit_hash

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Install Eclipse on ubuntu

Go to Eclipse and download Download Eclipse C++ IDE

and Eclipse for Java SE

Go to Downloads directory and list floders there

cd Downloads/ && ls

We should find the two packages downloaded as

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Install Robo3t On Ubuntu 18.04

Download the package form Robo3t or using wget

wget https://download.robomongo.org/1.2.1/linux/robo3t-1.2.1-linux-x86_64-3e50a65.tar.gz

Extract here using

tar -xvzf robo3t-1.2.1-linux-x86_64-3e50a65.tar.gz

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Error: ENOSPC: System limit for number of file watchers reached, watch

Increasing the amount of inotify watchers

You can set a new limit temporary with:

sudo sysctl fs.inotify.max_user_watches=524288
sudo sysctl -p

If you like to make your limit permanent, use:

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Create React App on Ubuntu 16.04

Install nodejs

sudo apt install nodejs

Install latest version of node

firstly, install npm sudo apt install npm

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Install php7.2 for ubuntu 16.04

sudo apt update && sudo apt upgrade

sudo apt-get install software-properties-common python-software-properties

sudo add-apt-repository -y ppa:ondrej/php

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Error on ubuntu 16.04 LTS

when open .mkv videos it says "dvd subpicture decoder package is not found"

Solution:

 sudo apt install libdvdnav4 libdvdread4 gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly libdvd-pkg

sudo apt install ubuntu-restricted-extras

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Schema Example:

(1) swap

 swap area 
 4000 MB
 Note: that's it's realtive to your RAM Size if we have 8GB we should make it at least 8000MB.

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For example: postman

gksudo gedit /usr/share/applications/postman.desktop or sudo gedit /usr/share/applications/postman.desktop

**Note gksudo is used for graphical sudo

and put this in the file