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console_and_bash.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Console and bash tricks</title>
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
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<link rel="stylesheet" href="lib/reveal.js/css/theme/night.css">
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<body>
<div class="reveal">
<div class="slides" id="content">
<section data-markdown
data-separator="==="
data-vertical="---"><script type="text/template">
# The ultimate complete guide to console and bash tricks
Just kidding, only a few of them, feel free to add yours ☺
===
## Disclaimer
I don't know if all of these will work on your machine, but eh, feel free to try them.
===
## The Tricks
---
### Chaining commands
```bash
# Executes commands foo, then bar
# Bar is executed only if the return code of foo is 0
foo && bar
```
---
### Moving through the directories
```bash
cd # Goes to your home directory
cd - # Goes to the previous directory (back and forth)
pwd # Shows the current path
```
---
### Manipulating the current line
All of these copy the removed content to a special buffer
```bash
Ctrl + k # Cut from your current position to the end of the line
Ctrl + u # Cut from your position to the begining of the line
Ctrl + w # Cut the previous word (from your position)
Ctrl + y # Paste the content of the special buffer at your current position
```
---
### History
```bash
history # Shows all your command history
history | grep foo # The same, but filters on foo (duh)
Ctrl + r # Allows you to search in your history
```
---
### Expansions
```bash
* # Equivalent of naming all the elements in the current directory
```
```bash
# Expands the current argument with a second argument with foo
# substituted for bar
{foo,bar}
# Ex. This will expand to `mv hlelo.txt hello.txt`
mv h{le,el}lo.txt
```
---
### Subsitutions
```bash
!! # Will be substituted by your previous command
!$ # Same with the last non command item
!^ # Same with the first non command item
!* # Same with all non command items
```
```bash
^foo^bar # Will run the whole previous command with foo substituted for bar
```
===
## Bonus
---
### I don't know how to name this one
```bash
Esc,. # Inserts the last element of your previous comment at the current position
```
---
### Ruby console
Add whatever ruby code you which to your ```.pryrc``` file (in the application directory).
The code will be loaded with your console.
```ruby
puts "Loading #{__FILE__}"
def me
@_me ||= User.where(email: 'benoit.dinocourt@jobteaser.com').first
end
```
</script></section>
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