LaTeX math mode in Microsoft Powerpoint

Writing equations in Powerpoint doesn't have to be a pain. There's Math Mode.
Alt+= will get you there. Mostly LaTeX compatible.

Note: doesn't work on my Powerpoint for Mac 2016 installation. :/ Alt, N, E, I gets you into insert equation mode there, which also mostly recognizes LaTeX-style math entry.

For more handy tips on mathematical presentations in Powerpoint, see:

• https://www.cs.bu.edu/~reyzin/pptips.html
• http://www.chem.mtu.edu/~tbco/cm416/EquationEditor_main.pdf

Look up machine name from IP address

IP address, say, "128.83.139.20".
Simply type:

$ nslookup 128.83.139.20

Output:
Server: 127.0.1.1
Address: 127.0.1.1#53

20.139.83.128.in-addr.arpa name = eldar-9.cs.utexas.edu.

List all files in order of size starting at a certain root folder

$ du -a ./ | sort -n -r > du_out.txt

Install new NVIDIA graphics card and cuda on Linux Mint

NVIDIA driver

Manual install instructions from https://sites.google.com/site/easylinuxtipsproject/12

• Power off
• Install card in motherboard slot
• Connect monitor cables to card outputs
• Find out what graphics card you have: $ lspci | grep VGA
• Find out which driver you should download by entering card details at: http://www.nvidia.com/Download/index.aspx?lang=en-us
• Download the driver
• Remove all previous nvidia drivers by running: $ sudo apt-get purge nvidia*
• $ chmod +x -v ~/Downloads/NVIDIA-Linux-*.run
• Switch to terminal only mode: $ sudo service mdm stop
• Login in terminal-only mode
• Run: $ sudo sh ~/Downloads/NVIDIA-Linux-*.run
• Accept all options
• After everything is done, $ sudo reboot
• Did it work?
• Everything should display properly in high res
• $ lsmod | grep nvidia
• $ lspci | grep VGA
• Check if nouveau is still being used (if properly installed, no), by: $ lsmod | grep nouveau

If things didn't go to plan, and you need to uninstall, then:

$ sudo sh ~/Downloads/NVIDIA-Linux-*.run --uninstall

$ sudo rm -v /etc/X11/xorg.conf

$ sudo reboot

CUDA

Again, prefer manual install from https://developer.nvidia.com/cuda-toolkit-archive over official repository cuda packages. Use the run file instructions from http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux/#axzz45oaAPyTF. Don't accept offer to reinstall Nvidia drivers during cuda installation.

Nicknames for ssh hosts

You can specify ssh host nicknames through your .ssh/config file. See: https://gist.github.com/dineshj1/9f304084a1f4af27ae2ccf79c134b0e6