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def get_tag_info(commit)
  info = `git describe --tags #{commit}`.chomp

  if info[/(.*)-(\d+)-g([a-z0-9]{7})/]
    matches = Regexp.last_match
    last_tag = matches[1]
    commits_since_tag = matches[2]
    noun = (commits_since_tag.to_i == 1) ? 'commit' : 'commits'
    "#{last_tag} + #{commits_since_tag} #{noun}"
  else

whylom

# Open an SSH tunnel to port 3306 (default MySQL port) on a remote machine.
# Specify the local port with an optional 2nd argument.
# The default is 3307, in case you have MySQL running locally on 3306.
#
# $ tunnel user@host
#     -> opens tunnel to host on port 3306, using local port 3307
#
# $ tunnel user@host 3333
#     -> opens tunnel to host on port 3306, using local port 3333

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"#{error.message}\n#{error.backtrace.join("\n")}"

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words = ["Life", "Liberty", "and", "the", "pursuit", "of", "Happiness"]

words.grep(/^[A-Z]/) 
#=> ["Life", "Liberty", "Happiness"]

words.grep(/^([A-Z])/) { $1 } 
#=> ["L", "L", "H"]

whylom

var blinking;

function startBlinking() {
  blinking = setInterval(function() {
    $('.light').toggleClass('on');
  }, 750);    
}

function stopBlinking() {
  clearInterval(blinking);

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mysqldump --no-data -u root -ppw funky_database > funky_database.sql

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For security reasons, many hosting providers restrict external access to the default MySQL port 3306. But if you have SSH access to the database server, you can access the MySQL server from your local machine by using an SSH tunnel. An SSH tunnel forwards bits back & forth between a port on your machine and a port on the remote machine, all lovingly encrypted with SSH.

Here's how you do it! But first, my assumptions:

1. You already have configured SSH access to the remote server.
2. You want to access port 3306 on the remote server.
3. You want to access port 3307 on your local machine. This is simply because many devs (myself included) routinely have MySQL running on port 3307.

Here is the Unix command to open an SSH tunnel to hostname_or_ip with the user account username

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# First, some variables!
a, b = %w(foo bar)

# Good old-fashioned string interpolation.
"#{a} is not #{b}" #=> "foo is not bar"

# Today, I learned that this craziness works!
"%s is not %s" % [a, b] #=> "foo is not bar"

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# Shell out to the fast and reliable `wc` utility.
def lines(path)
  # output of wc (returned by backticks) is formatted like this:
  # "     111 filename.ext"
  `wc -l #{path}`.strip.split(' ').first.to_i
end

# **/* gets all files and directories in all subdirectories.
files = Dir["/path/to/directory/**/*"]

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$ leggo 3306

Port 3306 is being used by "mysqld"

  process 66117 | started 4:53PM | up for 0:01.25

  /usr/local/Cellar/mysql/5.5.20/bin/mysqld
  --basedir=/usr/local/Cellar/mysql/5.5.20
  --datadir=/usr/local/var/mysql 
  --plugin-dir=/usr/local/Cellar/mysql/5.5.20/lib/plugin