draw flowchart or diagram on Linux

There are several well-known commercial flowchart and diagram software available, e.g., Visio on Windows, OmniGraffle on MacOS X. Then what about Linux? In fact, there are a couple of reasonably good Linux alternatives to Visio or OmniGraffle, for example, yEd, Dia, LibreOffice Draw, Pencil Project, etc.

In this tutorial, I will describe how to create flowchart or diagram with yEd graph editor on Linux.

yEd is an extremely easy-to-use, yet feature-rich diagram editor written in Java. Using yEd, you can create flowcharts, BPMN/UML diagrams, organizational charts, or any kind of graphs containing nodes and edges. It also features many sophisticated layout generation algorithms built-in, which allow you to test alternative layouts of created diagrams or graphs with a single button click.
Install yEd on Linux

yEd is a standalone Java application whose JAR file is freely downloadable from its website. So you can run yEd on any platform which has Java Run Time (JRE) installed. Assuming that you downloaded yEd zip file and have JRE installed on your Linux, you can install yEd as follows.
$ sudo unzip yEd-3.11.1.zip -d /opt

Then create a script named yed in /usr/bin directory, which launches JVM as shown below.
$ sudo vi /usr/bin/yed

#!/bin/sh
java -jar /opt/yed-3.11.1/yed.jar

Next, make the script executable.
$ sudo chmod +x /usr/bin/yed

Now you can launch yEd editor simply by running the script as follows.
$ yed

If you want, you can also create a desktop shortcut for yEd with the following information.

Name: yEd
Command: java -jar /opt/yed-3.11.1/yed.jar
Icon: /opt/yed-3.11.1/icons/yicon32.png

Once you launch yEd, you will see an initial yEd window where you can create or open a yEd document file.

source:
https://www.facebook.com/haking.cracking.tutorial?fref=ts