diff --git a/bin/dev b/bin/dev
index 7b8ee2e..cbdc389 100755
--- a/bin/dev
+++ b/bin/dev
@@ -1,4 +1,4 @@
-#!/usr/bin/ruby --disable-gems
+#!/usr/bin/env -S ruby --disable-gems
 
 Encoding.default_external = Encoding::UTF_8
 Encoding.default_internal = Encoding::UTF_8
diff --git a/lib/dev/commands.rb b/lib/dev/commands.rb
index 6c9ca8a..ebeb9d2 100644
--- a/lib/dev/commands.rb
+++ b/lib/dev/commands.rb
@@ -14,6 +14,7 @@ def self.register(const, cmd, path)
 
     autoload(:Contextual, 'dev/commands/contextual')
 
+    register(:Run,    'run',    'dev/commands/run')
     register(:Cd,     'cd',     'dev/commands/cd')
     register(:Clone,  'clone',  'dev/commands/clone')
     register(:Config, 'config', 'dev/commands/config')
diff --git a/lib/dev/commands/run.rb b/lib/dev/commands/run.rb
new file mode 100644
index 0000000..bccc05a
--- /dev/null
+++ b/lib/dev/commands/run.rb
@@ -0,0 +1,108 @@
+class Run < Dev::Command
+  def call(args, _name)
+    help_flags = ['--help', '-h']
+    args = args - help_flags
+    full_key = args.join(":")
+
+    cmd = root_namespace.tree[full_key]
+
+    if cmd.nil?
+      puts "Command not found: #{full_key}"
+      puts
+      root_namespace.help!
+
+    elsif (args & help_flags).any?
+      cmd.help!
+    else
+      cmd.run!
+    end
+  end
+
+  def root_namespace
+    @commands ||= Command.parse_yaml
+  end
+
+  private
+
+  class Command < Struct.new(:parents, :key, :run, :syntax, :help, :subcommands)
+    def initialize(parents, key, run, syntax: nil, help: nil, subcommands: [])
+      super(parents, key, run, syntax, help, subcommands || [])
+    end
+
+    def self.parse_node(parents, key, node, help: nil)
+      run = (node.is_a?(String) ? node : node['run'])
+      syntax = node.is_a?(Hash) ? node['syntax'] : nil
+      help = node.is_a?(Hash) ? node['desc'] : nil
+      subcommands = if node.is_a?(Hash) && node['subcommands']
+        namespace = parents + [key]
+        parse_namespace(namespace, node['subcommands'])
+      end
+
+      Command.new(parents, key, run, syntax: syntax, help: help, subcommands: subcommands)
+    end
+
+    def self.parse_namespace(parents, namespace)
+      namespace.map do |key, value|
+        parse_node(parents, key, value)
+      end
+    end
+
+    def self.parse_yaml
+      subcommands = if commands = Dev::Project.current.config['commands']
+        parse_namespace([], commands)
+      else
+        []
+      end
+
+      Command.new([], nil, nil, subcommands: subcommands)
+    end
+
+    def visible?
+      if subcommands.length > 0
+        return true
+      end
+      [key, help, run].join.size > 1
+    end
+
+    def run!
+      if run.to_s != ""
+        cmd = run.gsub("\'", "\\\'")
+        system("bash -c \'#{cmd}\'")
+      else
+        help!
+      end
+    end
+
+    def full_key
+      [parents, key].flatten.join(":")
+    end
+
+    def tree(commands = {})
+      if visible?
+        commands[full_key] = self
+      end
+      if subcommands.any?
+        subcommands.each do |cmd|
+          cmd.tree(commands)
+        end
+      end
+      commands
+    end
+
+    def help!
+      puts
+      puts "Available commands:"
+      puts
+      tree.each do |key, node|
+        indent = node.parents.length + 1
+        puts "  " * indent + "#{key}"
+      end
+    end
+  end
+
+
+
+  def self.help
+    root_namespace.help!
+  end
+end