# Set up LaTeX

## Installing Latex

$$\LaTeX$$ is a great typesetting system that includes a lot of features that allow to produce scientific documents. Many researchers use Latex to produce their papers and presentations, and many journals require authors to hand in their articles in a TeX format.

Latex is free to use. To use the Latex system, a TeX distribution needs to be installed. Detailed instructions for the different platforms are provided below.

### Windows

Download the file install-tl-windows.exe from here and follow the instructions.

### MacOS

You can install MacTeX from the official website or using Homebrew:

brew cask install mactex


### Linux (Ubuntu-based)

Install it from the terminal using:

sudo apt-get install texlive-latex-extra


After following the instructions, check whether everything worked by checking the output of the following command:

tex --version


This should give an output similar to this one, where version numbers and details will change depending on your platform.

TeX 3.14159265 (TeX Live 2019/Debian)
kpathsea version 6.3.1
There is NO warranty.  Redistribution of this software is
covered by the terms of both the TeX copyright and
the Lesser GNU General Public License.
named COPYING and the TeX source.
Primary author of TeX: D.E. Knuth.


Note that additional packages for Tex Live should be installed through the apt package manager as well (using tlmgr leads to problems due to different versions)

## Installing LyX, a $\LaTeX$ Alternative

### Get LyX

LyX is an open source document processor based on Latex. Download LyX.

### Making LyX Available on the Command Prompt

You have just installed LyX and may need to access LyX from the command line.

#### Windows users

For you to be able to use LyX from the command prompt, follow the steps below.

Warning

Making LyX available via the PATH settings on Windows

We need to update our PATH settings; these settings are a set of directories that Windows uses to “look up” software to startup.

• Right-click on Computer.
• Go to “Properties” and select the tab “Advanced System settings”.
• Choose “Environment Variables” and select Path from the list of system variables.
• Choose Edit.
• Environment variable name: LYX_BIN

• Windows 7 and 8 machines: If you chose the default installation directory, copy and paste the following string without spaces at the start or end:

c:\Program Files (x86)\Lyx

• Windows 10 machines:

• Click New and paste the following string:

c:\Program Files (x86)\Lyx

• Click on OK as often as needed.

#### Mac users

For you to be able to use LyX from the command line, you have to add LyX to your environmental variables:

Warning

Making LyX available via the PATH settings on Mac

• Open the Terminal.
• Type nano ~/.bash_profile.
• Add LyX to the environmental variables:
• Add export LYX_BIN=/Applications/LyX.app/Contents/MacOS/lyx to a new line.
• Save by pressing Ctrl + O and exit by pressing Ctrl + X.
• Relaunch the Terminal. Then type source ~/.bash_profile to bring the new .bash_profile into effect.
• Type $LYX_BIN to check availability. Remember to type the $ before LYX_BIN.

\$LYX_BIN

followed by hitting the Return key.