diff --git a/cli.js b/cli.js
index 3a92ac6..1b3675a 100755
--- a/cli.js
+++ b/cli.js
@@ -6,7 +6,15 @@ var path = require('path')
 var watch = require('./main.js')
 
 if(argv._.length === 0) {
-  console.error('Usage: watch <command> [...directory] [--wait=<seconds>] [--filter=<file>] [--interval=<seconds>] [--ignoreDotFiles] [--ignoreUnreadable]')
+  console.error([
+    'Usage: watch <command> [...directory]',
+    '[--wait=<seconds>]',
+    '[--filter=<file>]',
+    '[--interval=<seconds>]',
+    '[--ignoreDotFiles]',
+    '[--ignoreUnreadable]',
+    '[--ignoreDirectoryPattern]'
+  ].join(' '))
   process.exit()
 }
 
@@ -35,6 +43,11 @@ if(argv.ignoreDotFiles || argv.d)
 if(argv.ignoreUnreadable || argv.u)
   watchTreeOpts.ignoreUnreadableDir = true
 
+if(argv.ignoreDirectoryPattern || argv.p) {
+  var match = (argv.ignoreDirectoryPattern || argv.p).match(/^\/(.*)\/([gimuy])$/);
+  watchTreeOpts.ignoreDirectoryPattern = new RegExp(match[1], match[2])
+}
+
 if(argv.filter || argv.f) {
   try {
     watchTreeOpts.filter = require(path.resolve(process.cwd(), argv.filter || argv.f))
diff --git a/readme.mkd b/readme.mkd
index 781f358..c645689 100644
--- a/readme.mkd
+++ b/readme.mkd
@@ -110,6 +110,10 @@ OPTIONS:
      --ignoreUnreadable, -u
         Silently ignores files that cannot be read within the
         watch [directory].
+
+     --ignoreDirectoryPattern=<regexp>, -p
+        Silently skips directories that match the regular
+        expression.
 ```
 
 It will watch the given directories (defaults to the current working directory) with `watchTree` and run the given command every time a file changes.