From 0e5b05823aa3b0272024a6ff8510adff2e375051 Mon Sep 17 00:00:00 2001
From: Michael Alexander <beefsack@gmail.com>
Date: Sun, 20 May 2012 09:14:43 +0800
Subject: [PATCH] Added exec command.

---
 doc/cli/exec.md | 15 +++++++++++++++
 lib/exec.js     | 18 ++++++++++++++++++
 lib/npm.js      |  1 +
 3 files changed, 34 insertions(+)
 create mode 100644 doc/cli/exec.md
 create mode 100644 lib/exec.js

diff --git a/doc/cli/exec.md b/doc/cli/exec.md
new file mode 100644
index 00000000000..ed91d517c1a
--- /dev/null
+++ b/doc/cli/exec.md
@@ -0,0 +1,15 @@
+npm-exec(1) -- Add local package binaries to path and execute command
+====================================
+
+## SYNOPSIS
+
+    npm exec
+
+## DESCRIPTION
+
+Adds the local package bin path (eg. node_modules/.bin) before executing the
+command.
+
+## SEE ALSO
+
+* npm-bin(1)
diff --git a/lib/exec.js b/lib/exec.js
new file mode 100644
index 00000000000..91e6cfbda6c
--- /dev/null
+++ b/lib/exec.js
@@ -0,0 +1,18 @@
+module.exports = exec
+
+var npm = require("./npm.js")
+  , output = require("./utils/output.js")
+
+exec.usage = "npm exec\n(add local package binaries to path and execute command)"
+
+function exec (args, cb) {
+  var path = require("path")
+    , b = npm.bin
+    , PATH = (process.env.PATH || "").split(":")
+    , exec = require("child_process").exec
+
+  var cmd = "PATH=" + b + ":$PATH " + args.join(" ")
+  exec(cmd, function (error, stdout, stderr) {
+    output.write(stdout, function (er) { cb(er, stdout) })
+  })
+}
diff --git a/lib/npm.js b/lib/npm.js
index 2db21e34def..0705fb1ddc6 100644
--- a/lib/npm.js
+++ b/lib/npm.js
@@ -156,6 +156,7 @@ var commandCache = {}
               , "restart"
               , "run-script"
               , "completion"
+              , "exec"
               ]
   , plumbing = [ "build"
                , "unbuild"