diff --git a/euscanwww/INSTALL b/euscanwww/INSTALL
index a32d7b0..e384d02 100644
--- a/euscanwww/INSTALL
+++ b/euscanwww/INSTALL
@@ -13,6 +13,13 @@ touch local_settings.py
 ./manage.py scan-portage htop   # Scan ebuilds
 ./manage.py scan-metadata htop  # Lookup for maintainers, herds, etc...
 ./manage.py scan-upstream htop  # Run euscan
+
+# Scan dev-python
+eix --only-names -C dev-python | ./manage.py scan-portage
+eix --only-names -C dev-python | ./manage.py scan-metadata
+eix --only-names -C dev-python | ./manage.py scan-upstream
+
+# Update counters at end of scan
 ./manage.py update-counters     # Update counters, graphs, etc...
 
 # Start server
diff --git a/euscanwww/euscan/management/commands/scan-metadata.py b/euscanwww/euscan/management/commands/scan-metadata.py
index 863e36e..bb5e070 100644
--- a/euscanwww/euscan/management/commands/scan-metadata.py
+++ b/euscanwww/euscan/management/commands/scan-metadata.py
@@ -33,15 +33,15 @@ class Command(BaseCommand):
     help = 'Scans metadata and fills database'
 
     def handle(self, *args, **options):
-        if len(args) == 0 and options['all'] == False:
-            raise CommandError('You must specify a package or use --all')
-
-        if len(args) == 0:
+        if options['all']:
             for pkg in Package.objects.all():
                 self.scan(options, '%s/%s' % (pkg.category, pkg.name))
-        else:
+        elif len(args):
             for package in args:
                 self.scan(options, package)
+        else:
+            for package in sys.stdin.readlines():
+                self.scan(options, package[:-1])
 
     @commit_on_success
     def scan(self, options, query=None):
diff --git a/euscanwww/euscan/management/commands/scan-portage.py b/euscanwww/euscan/management/commands/scan-portage.py
index d6c6a13..82e5532 100644
--- a/euscanwww/euscan/management/commands/scan-portage.py
+++ b/euscanwww/euscan/management/commands/scan-portage.py
@@ -36,21 +36,21 @@ class Command(BaseCommand):
             default=False,
             help='Be quiet'),
         )
-    args = '<package package ...>'
+    args = '[package package ...]'
     help = 'Scans portage tree and fills database'
 
     def handle(self, *args, **options):
-        if len(args) == 0 and options['all'] == False:
-            raise CommandError('You must specify a package or use --all')
-
         if not options['quiet']:
             self.stdout.write('Scanning portage tree...\n')
 
-        if len(args) == 0:
+        if options['all']:
             self.scan(options)
-        else:
+        elif len(args):
             for package in args:
                 self.scan(options, package)
+        else:
+            for package in sys.stdin.readlines():
+                self.scan(options, package[:-1])
 
         if options['purge-versions']:
             self.purge_versions(options)
diff --git a/euscanwww/euscan/management/commands/scan-upstream.py b/euscanwww/euscan/management/commands/scan-upstream.py
index 241fc66..0a2ee35 100644
--- a/euscanwww/euscan/management/commands/scan-upstream.py
+++ b/euscanwww/euscan/management/commands/scan-upstream.py
@@ -42,9 +42,6 @@ class Command(BaseCommand):
     help = 'Scans metadata and fills database'
 
     def handle(self, *args, **options):
-        if len(args) == 0 and options['all'] == False and options['feed'] == False:
-            raise CommandError('You must specify a package or use --all')
-
         if options['feed']:
             self.parse_output(options, sys.stdin)
             if options['purge-versions']:
@@ -56,11 +53,13 @@ class Command(BaseCommand):
 
         packages = []
 
-        if len(args) == 0:
+        if options['all']:
             for pkg in Package.objects.all():
                 packages.append('%s/%s' % (pkg.category, pkg.name))
-        else:
+        elif args:
             packages = list(args)
+        else:
+            packages = [ package[:-1] for package in sys.stdin.readlines() ]
 
         self.scan(options, packages)