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#!/bin/bash

# Compute means of experiment data CSVs in a directory into a CSV.
# Example: ./generate-mean-csv.sh data/rawdata/vib-3/

# CSV directory
dir=$1

# Write CSV header
echo "Date,User Id,Gender,Age,vibtime,waitingtime,Data Count,Accuracy (%)"

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CSV Command Line Statistics

tree list a tree view of current directory recursively, better than ls.

Check line counts for all data:

    wc -l *.csv

Install Python toolkit csvkit for csv* commands.

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Arch Linux Pacman & Yaourt Package Manager

Pacman (Official)

Easter egg

Edit /etc/pacman.conf:

Under the # Misc options section, remove the # in front of Color and add the line ILoveCandy. Because Pac-Man loves candy.

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Ranger File Manager

Use Python 3. q to quit.

Shortcuts

File manipulation

• Space: Select file or directory like Ctrl.
• v/V: Select continuously like Shift.
• yy: Copy files.

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Blender 3D Animation Software

Check out videos: Introduction to Blender « CGCookie.

Setup

• File > User Preference
  • Input > Mouse Left Select
  • System > International Fonts to allow Chinese file name.

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GNU Stow: maintain dotfiles

Put all dotfiles in a specific folder so it is easy to use version control tool like git.

Steps

1. Create directory ~/dotfiles/.
2. Copy dotfiles into directories like:

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Network conclict

The only frustration installing Arch Linux is network conflict:

• Console: netctl
• GNOME: NetworkManager

Use systemctl to stop disable services.

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Emacs

Basic Key Bindings

• Shortcut starts with C-x.

• Command name starts with M-x.

• Custom shortcut starts with C-c.

• C-x C-c: Exit Emacs.

• C-x C-f: Find file.

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Emacs Lisp

Lisp is List Processor. Lisp is a programmable programming language.

Emacs is built by Emacs Lisp, a dialect of Lisp.

something is a variable. Like a pointer point to something defined.

`something is "something" itself.