Lazyme 
Lazyme is a simple gem that helps you optimize your laziness. It displays your most often used shell commands so that you can change them into aliases and eventually type less.
Installation
gem install lazymeUsage
lazyme =>
+---------------------------------------------+-------+
| Lazyme |
+---------------------------------------------+-------+
|... | ... |
| ei | 21 |
| gpstg | 22 |
| gstp | 23 |
| zs | 28 |
| s . | 30 |
| zrr | 32 |
| gpshh | 60 |
| rss | 70 |
| c | 75 |
| gd | 107 |
| o . | 123 |
| gst | 130 |
| ls | 179 |
| gl | 310 |
| gp | 445 |
| gds | 540 |
| gaa | 817 |
| g | 3365 |
+---------------------------------------------+-------+
| Command | Count |
+---------------------------------------------+-------+
You can set aliases by adding following lines into your .bashrc or .zshrc files:
alias gr='grep — color'
alias g='git status'
alias gaa='git add . -A'
function gm() {
git commit -m "$*"
}
If your history file is in a non-standard location you need to provide its path when running the lazyme command:
lazyme ~/files/history
You can use this gem also to check the usage of your Ruby IRB commands. You need to persist history first. Add to your ~/.irbrc file:
require 'irb/ext/save-history'
IRB.conf[:SAVE_HISTORY] = 10000
IRB.conf[:HISTORY_FILE] = "#{ENV['HOME']}/.irb-history"
Than just:
lazyme ~/.irb-history