diff --git a/pywal/__main__.py b/pywal/__main__.py
index ecfd05c..9ac8092 100644
--- a/pywal/__main__.py
+++ b/pywal/__main__.py
@@ -164,8 +164,7 @@ def process_args(args):
         if not args.e:
             reload.env(tty_reload=not args.t)
 
-    if args.o:
-        util.disown([args.o])
+    reload.external_script(args.o)
 
     if not args.e:
         reload.oomox(args.g)
diff --git a/pywal/reload.py b/pywal/reload.py
index 7869d0b..6bda275 100644
--- a/pywal/reload.py
+++ b/pywal/reload.py
@@ -7,7 +7,7 @@ import shutil
 import subprocess
 import sys
 
-from .settings import CACHE_DIR, MODULE_DIR, OS
+from .settings import CACHE_DIR, MODULE_DIR, OS, CONFIG
 from . import util
 
 
@@ -88,6 +88,15 @@ def colors(cache_dir=CACHE_DIR):
         print("".join(util.read_file(sequences)), end="")
 
 
+def external_script(cmd_hook):
+    """Launch an external process after pywal."""
+    if cmd_hook:
+        util.disown([cmd_hook])
+
+    if CONFIG.get("general", "cmd_hook"):
+        util.disown(CONFIG.get("general", "cmd_hook").split())
+
+
 def env(xrdb_file=None, tty_reload=True):
     """Reload environment."""
     xrdb(xrdb_file)
diff --git a/pywal/settings.py b/pywal/settings.py
index 4bbc2b5..4590e46 100644
--- a/pywal/settings.py
+++ b/pywal/settings.py
@@ -17,7 +17,6 @@ import platform
 __version__ = "1.3.3"
 __cache_version__ = "1.0.0"
 
-
 HOME = os.getenv("HOME", os.getenv("USERPROFILE"))
 CACHE_DIR = os.path.join(HOME, ".cache", "wal")
 MODULE_DIR = os.path.dirname(__file__)