diff --git a/src/python/jw/pkg/cmds/distro/CmdDup.py b/src/python/jw/pkg/cmds/distro/CmdDup.py
index 561c5cf2..cd3935d0 100644
--- a/src/python/jw/pkg/cmds/distro/CmdDup.py
+++ b/src/python/jw/pkg/cmds/distro/CmdDup.py
@@ -12,6 +12,8 @@ class CmdDup(Cmd): # export
 
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
+        parser.add_argument('--download-only', default=False, action='store_true',
+                            help='Only download packages from the repos, don\'t install them, yet')
 
     async def _run(self, args: Namespace) -> None:
         return await self._backend.run(args)
diff --git a/src/python/jw/pkg/cmds/distro/backend/arch/Dup.py b/src/python/jw/pkg/cmds/distro/backend/arch/Dup.py
index 8fa66f2a..87ea8063 100644
--- a/src/python/jw/pkg/cmds/distro/backend/arch/Dup.py
+++ b/src/python/jw/pkg/cmds/distro/backend/arch/Dup.py
@@ -11,4 +11,7 @@ class Dup(Base):
         super().__init__(parent)
 
     async def run(self, args: Namespace):
-        raise NotImplementedError('distro dup is not yet implemented for Arch-like distributions')
+        pm_args = ['-Su']
+        if args.download_only:
+            pm_args.append('-w')
+        return await self.util.pacman(pm_args)
diff --git a/src/python/jw/pkg/cmds/distro/backend/debian/Dup.py b/src/python/jw/pkg/cmds/distro/backend/debian/Dup.py
index 08fcb7a5..dfb9910e 100644
--- a/src/python/jw/pkg/cmds/distro/backend/debian/Dup.py
+++ b/src/python/jw/pkg/cmds/distro/backend/debian/Dup.py
@@ -11,4 +11,8 @@ class Dup(Base):
         super().__init__(parent)
 
     async def run(self, args: Namespace):
-        raise NotImplementedError('distro dup is not yet implemented for Debian-like distributions')
+        apt_get_args: list[str] = []
+        if args.download_only:
+            apt_get_args.append('--download-only')
+        apt_get_args.append('upgrade')
+        return await self.apt_get(apt_get_args)
diff --git a/src/python/jw/pkg/cmds/distro/backend/redhat/Dup.py b/src/python/jw/pkg/cmds/distro/backend/redhat/Dup.py
index f100dcf3..17f499f5 100644
--- a/src/python/jw/pkg/cmds/distro/backend/redhat/Dup.py
+++ b/src/python/jw/pkg/cmds/distro/backend/redhat/Dup.py
@@ -11,4 +11,7 @@ class Dup(Base):
         super().__init__(parent)
 
     async def run(self, args: Namespace):
-        raise NotImplementedError('distro dup is not yet implemented for Red Hat-like distributions')
+        yum_args: list[str] = ['update']
+        if args.download_only:
+            yum_args.append('--downloadonly')
+        return await self.yum(yum_args)
diff --git a/src/python/jw/pkg/cmds/distro/backend/suse/Dup.py b/src/python/jw/pkg/cmds/distro/backend/suse/Dup.py
index d8f26bfe..0e330f6a 100644
--- a/src/python/jw/pkg/cmds/distro/backend/suse/Dup.py
+++ b/src/python/jw/pkg/cmds/distro/backend/suse/Dup.py
@@ -11,4 +11,7 @@ class Dup(Base):
         super().__init__(parent)
 
     async def run(self, args: Namespace):
-        return await self.util.zypper(['dup', '--force-resolution', '--auto-agree-with-licenses'])
+        zypper_args = ['dup', '--force-resolution', '--auto-agree-with-licenses']
+        if args.download_only:
+            zypper_args.append('--download-only')
+        return await self.util.zypper(zypper_args)