diff --git a/commands/host/1x-granite b/commands/host/1x-granite
index 8f6515f..b7e101b 100755
--- a/commands/host/1x-granite
+++ b/commands/host/1x-granite
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ## #ddev-generated
 ## Description: Build granite
 ## Usage: granite 1x-granite
diff --git a/commands/host/1x-lib.sh b/commands/host/1x-lib.sh
new file mode 100644
index 0000000..2714155
--- /dev/null
+++ b/commands/host/1x-lib.sh
@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+#
+# Shared helper library for 1x DDEV host commands.
+# Source this from any 1x-* command with:
+#   source "${BASH_SOURCE%/*}/1x-lib.sh"
+#
+# No ## Usage: header, so DDEV will not register this as a command.
+
+# Colors for printing messages.
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+BROWN='\033[0;33m'
+NC='\033[0m' # No Color
+
+# Cross-platform "sed"
+sed_compat() {
+  case "$OSTYPE" in
+    darwin*)
+      # BSD sed (macOS) needs '' after -i
+      local args=()
+      for arg in "$@"; do
+        if [[ "$arg" == "-i" ]]; then
+          args+=("-i" "")
+        else
+          args+=("$arg")
+        fi
+      done
+      sed "${args[@]}"
+      ;;
+    linux*)
+      sed "$@"
+      ;;
+    *)
+      echo "sed_compat: unsupported platform: $OSTYPE" >&2
+      return 1
+      ;;
+  esac
+}
+
+# Cross-platform "date"
+date_compat() {
+  case "$OSTYPE" in
+    darwin*)
+      # BSD date (macOS) lacks GNU extensions
+      if command -v gdate >/dev/null 2>&1; then
+        gdate "$@"
+      else
+        date "$@"
+      fi
+      ;;
+    linux*)
+      date "$@"
+      ;;
+    *)
+      echo "date_compat: unsupported platform: $OSTYPE" >&2
+      return 1
+      ;;
+  esac
+}
+
+# Cross-platform "open"
+open_compat() {
+  case "$OSTYPE" in
+    darwin*)
+      open "$@"
+      ;;
+    linux*)
+      xdg-open "$@"
+      ;;
+    *)
+      echo "open_compat: unsupported platform: $OSTYPE" >&2
+      return 1
+      ;;
+  esac
+}
diff --git a/commands/host/1x-playwright b/commands/host/1x-playwright
index 319be88..59a349f 100755
--- a/commands/host/1x-playwright
+++ b/commands/host/1x-playwright
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ## #ddev-generated
 ## Description: Run lullabot/ddev-playwright commands in a slightly more sane way :)
@@ -6,14 +6,9 @@
 ## Usage: 1x-playwright
 ## OSTypes: darwin,linux
 
-start=`date +%s`
+source "${BASH_SOURCE%/*}/1x-lib.sh"
 
-# Colors for printing messages.
-RED='\033[0;31m'
-CYAN='\033[0;36m'
-GREEN='\033[0;32m'
-BROWN='\033[0;33m'
-NC='\033[0m' # No Color
+start=`date_compat +%s`
 
 if ! command -v jq 2>&1 >/dev/null
 then
@@ -39,7 +34,7 @@ else
       host=$(ddev_hostname)
       playwright_report_url="https://${host}:9324"
       # Note: playwright "report server" hangs.
-      sleep 1 && open $playwright_report_url & jobs
+      sleep 1 && open_compat $playwright_report_url & jobs
       ddev playwright test "${@:2} --ui-host=0.0.0.0 --ui-port=9323"
       ;;
 
@@ -47,7 +42,7 @@ else
       host=$(ddev_hostname)
       kasmvnc_url="https://${host}:8444"
       echo "Please note - if asked for authentication login is your username on the host (`whoami`) and the password is 'secret' (without the ')"
-      sleep 1 && open $kasmvnc_url & jobs
+      sleep 1 && open_compat $kasmvnc_url & jobs
       ddev playwright codegen "${@:2}"
       ;;
 
@@ -62,7 +57,7 @@ else
       host=$(ddev_hostname)
       playwright_report_url="https://${host}:9324"
       # Note: playwright "report server" hangs.
-      sleep 1 && open $playwright_report_url & jobs
+      sleep 1 && open_compat $playwright_report_url & jobs
       ddev playwright show-report --host=0.0.0.0
       ;;
 
@@ -70,7 +65,7 @@ else
       host=$(ddev_hostname)
       kasmvnc_url="https://${host}:8444"
       # Note: playwright "ff|cr|wk" hangs.
-      sleep 1 && open $kasmvnc_url & jobs
+      sleep 1 && open_compat $kasmvnc_url & jobs
       echo "Please note - if asked for authentication login is your username on the host (`whoami`) and the password is 'secret' (without the ')"
       ddev playwright "$1" "${@:2}"
       ;;
@@ -79,7 +74,7 @@ else
       host=$(ddev_hostname)
       kasmvnc_url="https://${host}:8444"
       # Note: playwright "ff|cr|wk" hangs.
-      sleep 1 && open $kasmvnc_url & jobs
+      sleep 1 && open_compat $kasmvnc_url & jobs
       echo "Please note - if asked for authentication login is your username on the host (`whoami`) and the password is 'secret' (without the ')"
       ddev playwright "$1" "${@:2}"
       ;;
@@ -88,7 +83,7 @@ else
       host=$(ddev_hostname)
       kasmvnc_url="https://${host}:8444"
       # Note: playwright "ff|cr|wk" hangs.
-      sleep 1 && open $kasmvnc_url & jobs
+      sleep 1 && open_compat $kasmvnc_url & jobs
       echo "Please note - if asked for authentication login is your username on the host (`whoami`) and the password is 'secret' (without the ')"
       ddev playwright "$1" "${@:2}"
       ;;
@@ -97,7 +92,7 @@ else
       host=$(ddev_hostname)
       kasmvnc_url="https://${host}:8444"
       echo "Please note - if asked for authentication login is your username on the host (`whoami`) and the password is 'secret' (without the ')"
-      open $kasmvnc_url
+      open_compat $kasmvnc_url
       ;;
 
     *)
diff --git a/commands/host/1x-playwright-install b/commands/host/1x-playwright-install
index 62368b4..01289d4 100755
--- a/commands/host/1x-playwright-install
+++ b/commands/host/1x-playwright-install
@@ -1,14 +1,12 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ## #ddev-generated
 ## Description: Install the lullabot/ddev-playwright addon and does some basic onex config.
 ## Usage: 1x-playwright-install
 
-start=`date +%s`
+source "${BASH_SOURCE%/*}/1x-lib.sh"
 
-# Colors for printing messages.
-GREEN='\033[0;32m'
-NC='\033[0m' # No Color
+start=`date_compat +%s`
 
 # Make sure the container is alive.
 ddev start
diff --git a/commands/host/1x-start b/commands/host/1x-start
index 3c15917..3570885 100755
--- a/commands/host/1x-start
+++ b/commands/host/1x-start
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #ddev-generated
 ## Description: Starts the ddev project, runs auth and makes sure the .gitconfig is present.
 ## Usage: 1x-start
diff --git a/commands/host/1x-theme-debug b/commands/host/1x-theme-debug
index 3301231..38671e7 100755
--- a/commands/host/1x-theme-debug
+++ b/commands/host/1x-theme-debug
@@ -1,9 +1,11 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ## #ddev-generated
 ## Description: manage php config options
 ## Usage: 1x-theme-debug
 ## Example: "ddev 1x-theme-debug (enable|disable)"
 
+source "${BASH_SOURCE%/*}/1x-lib.sh"
+
 settings_dir="${DDEV_APPROOT}/${DDEV_DOCROOT}/sites/default"
 settings_local="settings.local.php"
 debug_services="services.theme_debug.yml"
@@ -49,11 +51,7 @@ preflight() {
   fi
 
   # Delete the config always, so that enabling twice doesn't add it multiple times.
-  if [[ $OSTYPE == darwin* ]]; then
-    sed -i '' '/^#.*DO NOT WRITE ANYTHING BELOW THIS LINE/,$d' "${settings_dir}/${settings_local}"
-  else
-    sed -i '/^#.*DO NOT WRITE ANYTHING BELOW THIS LINE/,$d' "${settings_dir}/${settings_local}"
-  fi
+  sed_compat -i '/^#.*DO NOT WRITE ANYTHING BELOW THIS LINE/,$d' "${settings_dir}/${settings_local}"
 }
 
 enable_debug() {
@@ -64,11 +62,7 @@ enable_debug() {
   echo "${debug_settings_php}" > "${settings_dir}/${debug_settings}"
 
   # Make sure the file ends with a new line
-  if [[ $OSTYPE == darwin* ]]; then
-    sed -i '' '$a\' "${settings_dir}/${settings_local}"
-  else
-    sed -i '$a\' "${settings_dir}/${settings_local}"
-  fi
+  sed_compat -i '$a\' "${settings_dir}/${settings_local}"
   echo -e "${debug_config_php}" >> "${settings_dir}/${settings_local}"
 }
 
diff --git a/commands/host/1x-token-setup b/commands/host/1x-token-setup
index 1bce68c..08f3337 100644
--- a/commands/host/1x-token-setup
+++ b/commands/host/1x-token-setup
@@ -1,10 +1,12 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ## #ddev-generated
 # Description: Setup GitLab tokens, composer gitlab tokens as well as npm gitlab tokens and npm scoped packages.
 # Usage: 1x-token-setup
 
 set -e
 
+source "${BASH_SOURCE%/*}/1x-lib.sh"
+
 # Stop the current DDEV project (if running).
 if ddev describe > /dev/null 2>&1; then
     ddev stop
@@ -74,26 +76,19 @@ fi
 # Setup token for NPM
 # Remove old token if exists to replace with new one, or just append
 # A simple append might create duplicates, so let's try to be a bit smarter or just append as requested
-# Make this work on MacOS and Linux >.<
-if [[ $OSTYPE == darwin* ]]; then
-    # "in-place editing only works for regular files" thus change directly ~/.npmrc
-    sed -i '' '/\/\/git.1xinternet.de\/:_authToken=/d' ~/.npmrc
-else
-    # "In-place editing" works also for symlinks on Linux, but for consistency's sake.
-    sed -i '/\/\/git.1xinternet.de\/:_authToken=/d' ~/.npmrc
-fi
-echo "//git.1xinternet.de/:_authToken=${PERSONAL_ACCESS_TOKEN}" >> ~/.ddev/homeadditions/.npmrc
+sed_compat -i '/\/\/git.1xinternet.de\/.*:_authToken=/d' ~/.npmrc
+echo "//git.1xinternet.de/:_authToken=${PERSONAL_ACCESS_TOKEN}" >> ~/.npmrc
 
 # Configure NPM in homeadditions so the container picks it up.
 # We append if not already present to avoid duplication
-if ! grep -q "@dxp:registry=https://git.1xinternet.de/api/v4/groups/392/-/packages/npm/" ~/.ddev/homeadditions/.npmrc; then
-    echo "@dxp:registry=https://git.1xinternet.de/api/v4/groups/392/-/packages/npm/" >> ~/.ddev/homeadditions/.npmrc
+if ! grep -q "@dxp:registry=https://git.1xinternet.de/api/v4/groups/392/-/packages/npm/" ~/.npmrc; then
+    echo "@dxp:registry=https://git.1xinternet.de/api/v4/groups/392/-/packages/npm/" >> ~/.npmrc
 fi
 
 # Configure NPM in homeadditions so the container picks it up.
 # We append if not already present to avoid duplication
-if ! grep -q "@1xINTERNET:registry=https://git.1xinternet.de/api/v4/group/1121/-/packages/npm/" ~/.ddev/homeadditions/.npmrc; then
-    echo "@1xINTERNET:registry=https://git.1xinternet.de/api/v4/projects/1121/packages/npm/" >> ~/.ddev/homeadditions/.npmrc
+if ! grep -q "@1xINTERNET:registry=https://git.1xinternet.de/api/v4/projects/1121/packages/npm/" ~/.npmrc; then
+    echo "@1xINTERNET:registry=https://git.1xinternet.de/api/v4/projects/1121/packages/npm/" >> ~/.npmrc
 fi
 
 # Start the DDEV project (so containers run).
diff --git a/commands/host/1x-twig-debug b/commands/host/1x-twig-debug
index 2933116..f4a2151 100755
--- a/commands/host/1x-twig-debug
+++ b/commands/host/1x-twig-debug
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ## #ddev-generated
 ## Description: Enables or disables Twig debugging for Drupal 10 installations
 ## Usage: 1x-twig-debug
diff --git a/commands/web/1x-phpcs b/commands/web/1x-phpcs
index 538006b..dc4df36 100644
--- a/commands/web/1x-phpcs
+++ b/commands/web/1x-phpcs
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ## #ddev-generated
 ## Description: Run phpcs within the web container
 ## Usage: 1x-phpcs