diff --git a/containers/syncthing/docker-compose.osx.yml b/containers/syncthing/docker-compose.osx.yml
new file mode 100644
index 0000000..d3f803d
--- /dev/null
+++ b/containers/syncthing/docker-compose.osx.yml
@@ -0,0 +1,23 @@
+---
+# See https://github.com/syncthing/syncthing/blob/main/README-Docker.md
+version: "3"
+services:
+  syncthing:
+    image: syncthing/syncthing:1.27.8
+    container_name: syncthing
+    hostname: MacBook-Pro
+    environment:
+      - PUID=501
+      - PGID=20
+    volumes:
+      - ${PWD}/config:/var/syncthing/config
+      - ${PWD}/data:/var/syncthing/data
+    ports:
+      # No way to use 'host' mode  in OS X
+      - 127.0.0.1:8384:8384/tcp   # Web UI
+      - 22000:22000/tcp           # TCP file transfers
+      - 22000:22000/udp           # QUIC file transfers
+      - 21027:21027/udp           # Receive local discovery broadcasts
+    restart: unless-stopped
+volumes:
+  config:
diff --git a/containers/syncthing/docker-compose.yml b/containers/syncthing/docker-compose.yml
index 62eed1f..aa1f922 100644
--- a/containers/syncthing/docker-compose.yml
+++ b/containers/syncthing/docker-compose.yml
@@ -14,6 +14,5 @@ services:
       - ${PWD}/data:/var/syncthing/data
     network_mode: host
     restart: unless-stopped
-
 volumes:
   config:
diff --git a/knowledge base/mac os x/README.md b/knowledge base/mac os x/README.md
index 86f1a68..bcfb176 100644
--- a/knowledge base/mac os x/README.md	
+++ b/knowledge base/mac os x/README.md	
@@ -63,6 +63,16 @@ sudo lsof -n -i 'TCP' -s 'TCP:LISTEN'
 # Get the PID of processes using specific ports.
 lsof -nt -i ':443'
 
+# List network interfaces.
+ifconfig
+networksetup -listallnetworkservices
+networksetup -listallhardwareports
+
+# Get information about network interfaces.
+networksetup -getinfo 'Wi-Fi'
+ipconfig getoption 'en0' 'domain_name_server'
+ipconfig getoption 'en0' 'subnet_mask'
+
 # Clear the DNS cache.
 sudo dscacheutil -flushcache; sudo killall -HUP 'mDNSResponder'
 
@@ -492,16 +502,14 @@ To use any of these key combinations, press and hold the keys immediately after
 - [Tagging files from the macOS command line]
 - [macOS: Using Custom DNS Resolvers]
 - [macOS tools and tips]
+- [List all network hardware from command line in Mac OS]
+- [Network warrior: how to use macOS network utilities]
 
 <!--
-  References
+  Reference
+  ═╬═Time══
   -->
 
-<!-- Upstream -->
-[compress a pdf in preview on mac]: https://support.apple.com/guide/preview/compress-a-pdf-prvw1509/mac
-[mac startup key combinations]: https://support.apple.com/en-us/HT201255
-[resize, rotate, or flip an image in preview on mac]: https://support.apple.com/guide/preview/resize-rotate-or-flip-an-image-prvw2015/11.0/mac/13.0
-
 <!-- In-article sections -->
 <!-- Knowledge base -->
 [defaults]: defaults.md
@@ -516,6 +524,11 @@ To use any of these key combinations, press and hold the keys immediately after
 [time machine]: time%20machine.md
 [xattr]: xattr.md
 
+<!-- Upstream -->
+[compress a pdf in preview on mac]: https://support.apple.com/guide/preview/compress-a-pdf-prvw1509/mac
+[mac startup key combinations]: https://support.apple.com/en-us/HT201255
+[resize, rotate, or flip an image in preview on mac]: https://support.apple.com/guide/preview/resize-rotate-or-flip-an-image-prvw2015/11.0/mac/13.0
+
 <!-- Others -->
 [boot a mac from usb drive]: https://www.wikihow.com/Boot-a-Mac-from-USB-Drive
 [caffeinate your mac]: https://www.theapplegeek.co.uk/blog/caffeinate
@@ -525,12 +538,14 @@ To use any of these key combinations, press and hold the keys immediately after
 [how to update xcode from command line]: https://stackoverflow.com/questions/34617452/how-to-update-xcode-from-command-line#34617930
 [installing .pkg with terminal?]: https://apple.stackexchange.com/questions/72226/installing-pkg-with-terminal#394976
 [launchctl man page]: https://www.unix.com/man-page/osx/1/launchctl
+[list all network hardware from command line in mac os]: https://osxdaily.com/2014/09/03/list-all-network-hardware-from-the-command-line-in-os-x/
 [list of xcode command line tools]: https://mac.install.guide/commandlinetools/8.html
 [macos default values command reference]: https://github.com/kevinSuttle/macOS-Defaults/blob/master/REFERENCE.md
 [macos network quality tool]: https://www.theapplegeek.co.uk/blog/networkquality
 [macos tools and tips]: https://handbook.gitlab.com/handbook/tools-and-tips/mac/
 [macos: using custom dns resolvers]: https://vninja.net/2020/02/06/macos-custom-dns-resolvers/
 [mdls]: https://ss64.com/osx/mdls.html
+[network warrior: how to use macos network utilities]: https://medium.com/macoclock/network-warrior-how-to-use-macos-network-utilities-63c88f490ba0
 [pam_reattach]: https://github.com/fabianishere/pam_reattach
 [tagging files from the macos command line]: https://brettterpstra.com/2017/08/22/tagging-files-from-the-command-line/
 [using terminal to find your mac's network name]: https://www.tech-otaku.com/networking/using-terminal-find-your-macs-network-name/