From 22a7233c4904db283014f1ec4563fc4cde20cd88 Mon Sep 17 00:00:00 2001
From: Marvin Bruns <android.bruns@gmail.com>
Date: Sat, 16 Nov 2024 01:32:12 +0100
Subject: [PATCH 1/5] Feature/pinctrl (#1)

* shutdown mechanism using systemd and pinctrl

* (un)install scripts and docs

* install script check prequisites
---
 README.md                | 27 +++++++--------
 install.sh               | 45 +++++++++++++++++++++++++
 src/x730button.service   | 11 ++++++
 src/x730button.sh        | 53 +++++++++++++++++++++++++++++
 src/x730shutdown.service | 12 +++++++
 src/x730shutdown.sh      | 19 +++++++++++
 uninstall.sh             | 28 ++++++++++++++++
 x730.sh                  | 72 ----------------------------------------
 8 files changed, 180 insertions(+), 87 deletions(-)
 create mode 100644 install.sh
 create mode 100644 src/x730button.service
 create mode 100644 src/x730button.sh
 create mode 100644 src/x730shutdown.service
 create mode 100644 src/x730shutdown.sh
 create mode 100644 uninstall.sh
 delete mode 100644 x730.sh

diff --git a/README.md b/README.md
index 7dab7a4..dbe820b 100644
--- a/README.md
+++ b/README.md
@@ -1,26 +1,23 @@
 # x730-script
-This is the safe shutdown script for x730;
 
-NOTE:
+This is the safe shutdown script for x730
 
-We test this shell script base official Raspbian '2018-11-13-raspbian-stretch.img' version;
-We test this shell script base official Raspbian '2019-09-26 Raspbian Buster' version also;
+> **NOTE**
+> This version targets newer Raspberry Pi OS versions supporting `pinctrl` instead of `/sys/class/gpio` or `raspi-gpio`
 
-How to use?
 
-* step 1:
-> wget https://raw.githubusercontent.com/geekworm-com/x730-script/master/x730.sh
+## Prequisites
 
-> sudo chmod +x x730.sh
+1. OS supporting systemd
+2. `/bin/bash` binary
+3. `pinctrl` binary on path
 
-> sudo bash x730.sh
 
-* step 2:
+## Installation
 
-> printf "%s\\n" "alias x730off='sudo x730shutdown.sh'" >> ~/.bashrc
+Run `sudo install.sh`
 
-* step 3:
-> sudo reboot
 
-* how to safe shut down, run the following comamdn:
-> x730off
+## Usage
+
+Use default GUI or terminal possibilities for poweroff/reboot or press the button of you PI's case (short reboot, long shutdown). 
diff --git a/install.sh b/install.sh
new file mode 100644
index 0000000..73cfc72
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+SCRIPT_PATH="${BASH_SOURCE}"
+while [ -L "${SCRIPT_PATH}" ]; do
+  SCRIPT_DIR="$(cd -P "$(dirname "${SCRIPT_PATH}")" >/dev/null 2>&1 && pwd)"
+  SCRIPT_PATH="$(readlink "${SCRIPT_PATH}")"
+  [[ ${SCRIPT_PATH} != /* ]] && SCRIPT_PATH="${SCRIPT_DIR}/${SCRIPT_PATH}"
+done
+SCRIPT_PATH="$(readlink -f "${SCRIPT_PATH}")"
+SCRIPT_DIR="$(cd -P "$(dirname -- "${SCRIPT_PATH}")" >/dev/null 2>&1 && pwd)"
+
+# Test is root
+if [ "$EUID" -ne 0 ]
+then 
+    echo "Please run as root"
+    exit
+fi
+
+
+# Check prequisites
+echo "Checking prequisites ..."
+
+for bin in "systemctl" "pinctrl"
+do
+  if ! type "$bin" &> /dev/null
+  then
+    echo "$bin ...  missing"
+    exit 1
+  else
+    echo "$bin ... passed"
+  fi
+done
+
+
+# Install shell scripts
+chmod 755 "$SCRIPT_DIR"/src/*.sh
+cp "$SCRIPT_DIR"/src/*.sh /usr/local/bin/
+
+
+# Install systemd units
+chmod 644 "$SCRIPT_DIR"/src/*.service
+cp "$SCRIPT_DIR"/src/*.service /etc/systemd/system/
+
+systemctl enable x730shutdown
+systemctl enable --now x730button
diff --git a/src/x730button.service b/src/x730button.service
new file mode 100644
index 0000000..2bf0fa8
--- /dev/null
+++ b/src/x730button.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=X730 Case Button
+After=local-fs.target
+
+[Service]
+Type=exec
+RemainAfterExit=no
+ExecStart=/usr/local/bin/x730button.sh
+
+[Install]
+WantedBy=multi-user.target
diff --git a/src/x730button.sh b/src/x730button.sh
new file mode 100644
index 0000000..c287690
--- /dev/null
+++ b/src/x730button.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+SHUTDOWN=4
+REBOOTPULSEMINIMUM=200
+REBOOTPULSEMAXIMUM=600
+SLEEPPULSESECONDS=$(echo "scale=${#REBOOTPULSEMINIMUM}; $REBOOTPULSEMINIMUM / 1000" | bc)
+pinctrl set "$SHUTDOWN" ip pd
+
+BOOT=17
+pinctrl set "$BOOT" op pn dl
+pinctrl set "$BOOT" dh
+
+getShutdownSignal() {
+	echo "$(pinctrl lev "$SHUTDOWN")"
+}
+
+getPulseTimestamp() {
+	echo "$(date +%s%N | cut -b1-13)"
+}
+
+sleepPulse() {
+	sleep "$SLEEPPULSESECONDS"
+}
+
+echo "X730 Shutting down..."
+
+while :
+do
+	shutdownSignal=$(getShutdownSignal)
+	if [ $shutdownSignal = 0 ]
+	then
+		sleepPulse
+	else
+		pulseStart=$(getPulseTimestamp)
+		while [ $shutdownSignal = 1 ]
+		do
+			sleepPulse
+			if [ $(( $(getPulseTimestamp) - $pulseStart )) -gt $REBOOTPULSEMAXIMUM ]
+			then
+				echo "X730 Shutting down, halting Rpi ..."
+				sudo poweroff
+				exit
+			fi
+			shutdownSignal=$(getShutdownSignal)
+		done
+		if [ $(( $(getPulseTimestamp) - $pulseStart )) -gt $REBOOTPULSEMINIMUM ]
+		then
+			echo "X730 Rebooting, recycling Rpi ..."
+			sudo reboot
+			exit
+		fi
+	fi
+done
diff --git a/src/x730shutdown.service b/src/x730shutdown.service
new file mode 100644
index 0000000..a8e0a2c
--- /dev/null
+++ b/src/x730shutdown.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=X730 Case Shutdown
+DefaultDependencies=no
+Before=shutdown.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart=/usr/local/bin/x730shutdown.sh
+
+[Install]
+WantedBy=shutdown.target
diff --git a/src/x730shutdown.sh b/src/x730shutdown.sh
new file mode 100644
index 0000000..430705d
--- /dev/null
+++ b/src/x730shutdown.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+BUTTON=18
+
+pinctrl set "$BUTTON" op pn dl
+pinctrl set "$BUTTON" dh
+
+SLEEP=${1:-4}
+
+re='^[0-9\.]+$'
+if ! [[ $SLEEP =~ $re ]] ; then
+   echo "error: sleep time not a number" >&2; exit 1
+fi
+
+echo "X730 Shutting down..."
+sleep $SLEEP
+
+#restore GPIO 18
+pinctrl set "$BUTTON" dl
diff --git a/uninstall.sh b/uninstall.sh
new file mode 100644
index 0000000..6ef66e0
--- /dev/null
+++ b/uninstall.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+SCRIPT_PATH="${BASH_SOURCE}"
+while [ -L "${SCRIPT_PATH}" ]; do
+  SCRIPT_DIR="$(cd -P "$(dirname "${SCRIPT_PATH}")" >/dev/null 2>&1 && pwd)"
+  SCRIPT_PATH="$(readlink "${SCRIPT_PATH}")"
+  [[ ${SCRIPT_PATH} != /* ]] && SCRIPT_PATH="${SCRIPT_DIR}/${SCRIPT_PATH}"
+done
+SCRIPT_PATH="$(readlink -f "${SCRIPT_PATH}")"
+SCRIPT_DIR="$(cd -P "$(dirname -- "${SCRIPT_PATH}")" >/dev/null 2>&1 && pwd)"
+
+# Test is root
+if [ "$EUID" -ne 0 ]
+then 
+    echo "Please run as root"
+    exit
+fi
+
+
+# Uninstall systemd units
+systemctl disable x730shutdown
+systemctl disable --now x730button
+rm /etc/systemd/system/x730shutdown.service
+rm /etc/systemd/system/x730button.service
+
+# Unnstall shell scripts
+rm /usr/local/bin/x730shutdown.sh
+rm /usr/local/bin/x730button.sh
diff --git a/x730.sh b/x730.sh
deleted file mode 100644
index 1fbe25a..0000000
--- a/x730.sh
+++ /dev/null
@@ -1,72 +0,0 @@
-#x730 Powering on /reboot /shutdown from hardware
-#!/bin/bash
-
-    sudo sed -e '/shutdown/ s/^#*/#/' -i /etc/rc.local
-
-    echo '#!/bin/bash
-
-SHUTDOWN=4
-REBOOTPULSEMINIMUM=200
-REBOOTPULSEMAXIMUM=600
-echo "$SHUTDOWN" > /sys/class/gpio/export
-echo "in" > /sys/class/gpio/gpio$SHUTDOWN/direction
-BOOT=17
-echo "$BOOT" > /sys/class/gpio/export
-echo "out" > /sys/class/gpio/gpio$BOOT/direction
-echo "1" > /sys/class/gpio/gpio$BOOT/value
-
-echo "X730 Shutting down..."
-
-while [ 1 ]; do
-  shutdownSignal=$(cat /sys/class/gpio/gpio$SHUTDOWN/value)
-  if [ $shutdownSignal = 0 ]; then
-    /bin/sleep 0.2
-  else  
-    pulseStart=$(date +%s%N | cut -b1-13)
-    while [ $shutdownSignal = 1 ]; do
-      /bin/sleep 0.02
-      if [ $(($(date +%s%N | cut -b1-13)-$pulseStart)) -gt $REBOOTPULSEMAXIMUM ]; then
-        echo "X730 Shutting down", SHUTDOWN, ", halting Rpi ..."
-        sudo poweroff
-        exit
-      fi
-      shutdownSignal=$(cat /sys/class/gpio/gpio$SHUTDOWN/value)
-    done
-    if [ $(($(date +%s%N | cut -b1-13)-$pulseStart)) -gt $REBOOTPULSEMINIMUM ]; then 
-      echo "X730 Rebooting", SHUTDOWN, ", recycling Rpi ..."
-      sudo reboot
-      exit
-    fi
-  fi
-done' > /etc/x730pwr.sh
-sudo chmod +x /etc/x730pwr.sh
-sudo sed -i '$ i /etc/x730pwr.sh &' /etc/rc.local 
-
-
-#X730 full shutdown through Software
-#!/bin/bash
-
-    sudo sed -e '/button/ s/^#*/#/' -i /etc/rc.local
-
-    echo '#!/bin/bash
-
-BUTTON=18
-
-echo "$BUTTON" > /sys/class/gpio/export;
-echo "out" > /sys/class/gpio/gpio$BUTTON/direction
-echo "1" > /sys/class/gpio/gpio$BUTTON/value
-
-SLEEP=${1:-4}
-
-re='^[0-9\.]+$'
-if ! [[ $SLEEP =~ $re ]] ; then
-   echo "error: sleep time not a number" >&2; exit 1
-fi
-
-echo "X730 Shutting down..."
-/bin/sleep $SLEEP
-
-#restore GPIO 18
-echo "0" > /sys/class/gpio/gpio$BUTTON/value
-' > /usr/local/bin/x730shutdown.sh
-sudo chmod +x /usr/local/bin/x730shutdown.sh

From cae3dd58cefecbc2f7d87c6f3d06fe2a608f3bd1 Mon Sep 17 00:00:00 2001
From: Marvin Bruns <android.bruns@gmail.com>
Date: Sat, 16 Nov 2024 02:27:53 +0100
Subject: [PATCH 2/5] Feature/reboot service (#2)

* add reboot service

* refactor poweroff and reboot services
---
 install.sh               |  3 ++-
 src/x730poweroff.service | 13 +++++++++++++
 src/x730reboot.service   | 13 +++++++++++++
 src/x730shutdown.service | 12 ------------
 src/x730shutdown.sh      |  1 +
 uninstall.sh             |  6 ++++--
 6 files changed, 33 insertions(+), 15 deletions(-)
 create mode 100644 src/x730poweroff.service
 create mode 100644 src/x730reboot.service
 delete mode 100644 src/x730shutdown.service

diff --git a/install.sh b/install.sh
index 73cfc72..9b4a6a1 100644
--- a/install.sh
+++ b/install.sh
@@ -41,5 +41,6 @@ cp "$SCRIPT_DIR"/src/*.sh /usr/local/bin/
 chmod 644 "$SCRIPT_DIR"/src/*.service
 cp "$SCRIPT_DIR"/src/*.service /etc/systemd/system/
 
-systemctl enable x730shutdown
+systemctl enable x730poweroff
+systemctl enable x730reboot
 systemctl enable --now x730button
diff --git a/src/x730poweroff.service b/src/x730poweroff.service
new file mode 100644
index 0000000..49aced8
--- /dev/null
+++ b/src/x730poweroff.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=X730 Case Poweroff
+DefaultDependencies=no
+Conflicts=reboot.target
+Before=poweroff.target halt.target shutdown.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart=/usr/local/bin/x730shutdown.sh "4"
+
+[Install]
+WantedBy=poweroff.target halt.target shutdown.target
diff --git a/src/x730reboot.service b/src/x730reboot.service
new file mode 100644
index 0000000..cb6696f
--- /dev/null
+++ b/src/x730reboot.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=X730 Case Reboot
+DefaultDependencies=no
+Conflicts=poweroff.target halt.target
+Before=reboot.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart=/usr/local/bin/x730shutdown.sh "1"
+
+[Install]
+WantedBy=reboot.target
diff --git a/src/x730shutdown.service b/src/x730shutdown.service
deleted file mode 100644
index a8e0a2c..0000000
--- a/src/x730shutdown.service
+++ /dev/null
@@ -1,12 +0,0 @@
-[Unit]
-Description=X730 Case Shutdown
-DefaultDependencies=no
-Before=shutdown.target
-
-[Service]
-Type=oneshot
-RemainAfterExit=no
-ExecStart=/usr/local/bin/x730shutdown.sh
-
-[Install]
-WantedBy=shutdown.target
diff --git a/src/x730shutdown.sh b/src/x730shutdown.sh
index 430705d..1b59678 100644
--- a/src/x730shutdown.sh
+++ b/src/x730shutdown.sh
@@ -5,6 +5,7 @@ BUTTON=18
 pinctrl set "$BUTTON" op pn dl
 pinctrl set "$BUTTON" dh
 
+# 1-2 sec for reboot, 3-7 for poweroff (default) 8+ crash (pull the plug)
 SLEEP=${1:-4}
 
 re='^[0-9\.]+$'
diff --git a/uninstall.sh b/uninstall.sh
index 6ef66e0..79049e9 100644
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -18,9 +18,11 @@ fi
 
 
 # Uninstall systemd units
-systemctl disable x730shutdown
+systemctl disable x730poweroff
+systemctl disable x730reboot
 systemctl disable --now x730button
-rm /etc/systemd/system/x730shutdown.service
+rm /etc/systemd/system/x730poweroff.service
+rm /etc/systemd/system/x730reboot.service
 rm /etc/systemd/system/x730button.service
 
 # Unnstall shell scripts

From ae8728b6788b40083d22cdc6dffb4fe49b8fb35a Mon Sep 17 00:00:00 2001
From: Marvin Bruns <android.bruns@gmail.com>
Date: Thu, 20 Mar 2025 12:05:15 +0100
Subject: [PATCH 3/5] More robust millisecond timestamp

---
 src/x730button.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/x730button.sh b/src/x730button.sh
index c287690..7a92b95 100644
--- a/src/x730button.sh
+++ b/src/x730button.sh
@@ -15,7 +15,7 @@ getShutdownSignal() {
 }
 
 getPulseTimestamp() {
-	echo "$(date +%s%N | cut -b1-13)"
+	echo "$(date +%s%3N)"
 }
 
 sleepPulse() {

From ca4a453ba34e2fb42dc8fc33b642da090f903f05 Mon Sep 17 00:00:00 2001
From: Marvin Bruns <android.bruns@gmail.com>
Date: Sun, 13 Jul 2025 12:43:31 +0200
Subject: [PATCH 4/5] alternatives for timing (#4)

added fallbacks for sleeping and timestamps
---
 README.md           |  8 +++++---
 install.sh          |  9 ++++++---
 src/x730button.sh   | 34 +++++++++++++++++++++++-----------
 src/x730shutdown.sh | 10 ++++++++--
 uninstall.sh        |  2 +-
 5 files changed, 43 insertions(+), 20 deletions(-)

diff --git a/README.md b/README.md
index dbe820b..98e1e90 100644
--- a/README.md
+++ b/README.md
@@ -2,15 +2,17 @@
 
 This is the safe shutdown script for x730
 
-> **NOTE**
+> [!NOTE]
+> 
 > This version targets newer Raspberry Pi OS versions supporting `pinctrl` instead of `/sys/class/gpio` or `raspi-gpio`
 
 
 ## Prequisites
 
 1. OS supporting systemd
-2. `/bin/bash` binary
-3. `pinctrl` binary on path
+2. `bash` shell (v5+ or GNU coreutils)
+3. Either sleep supporting fractions of seconds or perl or python
+4. `pinctrl` binary on path
 
 
 ## Installation
diff --git a/install.sh b/install.sh
index 9b4a6a1..6f6ccee 100644
--- a/install.sh
+++ b/install.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_PATH="${BASH_SOURCE}"
 while [ -L "${SCRIPT_PATH}" ]; do
@@ -20,9 +20,10 @@ fi
 # Check prequisites
 echo "Checking prequisites ..."
 
-for bin in "systemctl" "pinctrl"
+echo "Test required binaries"
+for bin in "systemctl" "pinctrl" "bash"
 do
-  if ! type "$bin" &> /dev/null
+  if ! command -v "$bin" &> /dev/null
   then
     echo "$bin ...  missing"
     exit 1
@@ -31,6 +32,8 @@ do
   fi
 done
 
+echo "Test "
+
 
 # Install shell scripts
 chmod 755 "$SCRIPT_DIR"/src/*.sh
diff --git a/src/x730button.sh b/src/x730button.sh
index 7a92b95..09e65c1 100644
--- a/src/x730button.sh
+++ b/src/x730button.sh
@@ -1,25 +1,37 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SHUTDOWN=4
-REBOOTPULSEMINIMUM=200
-REBOOTPULSEMAXIMUM=600
-SLEEPPULSESECONDS=$(echo "scale=${#REBOOTPULSEMINIMUM}; $REBOOTPULSEMINIMUM / 1000" | bc)
+REBOOT_PULSE_MINIMUM_MILLISECONDS=200
+REBOOT_PULSE_MAXIMUM_MILLISECONDS=600
+SLEEP_PULSE_SECONDS="0.200"
 pinctrl set "$SHUTDOWN" ip pd
 
 BOOT=17
 pinctrl set "$BOOT" op pn dl
 pinctrl set "$BOOT" dh
 
+exSleep() {
+  sleep "$1" \
+	|| perl -e "select(undef, undef, undef, $1)" \
+	|| "$(command -v python3 || command -v python || command -v python2)" -c "import time; time.sleep($1)"
+}
+
 getShutdownSignal() {
-	echo "$(pinctrl lev "$SHUTDOWN")"
+	pinctrl lev "$SHUTDOWN"
 }
 
 getPulseTimestamp() {
-	echo "$(date +%s%3N)"
+  if [ -n "$EPOCHREALTIME" ]
+  then
+    local us="${EPOCHREALTIME/[^0-9]/}"
+    echo "${us:0:-3}"
+  else
+	  date +%s%3N
+	fi
 }
 
 sleepPulse() {
-	sleep "$SLEEPPULSESECONDS"
+	exSleep "$SLEEP_PULSE_SECONDS"
 }
 
 echo "X730 Shutting down..."
@@ -27,15 +39,15 @@ echo "X730 Shutting down..."
 while :
 do
 	shutdownSignal=$(getShutdownSignal)
-	if [ $shutdownSignal = 0 ]
+	if [ "$shutdownSignal" = 0 ]
 	then
 		sleepPulse
 	else
 		pulseStart=$(getPulseTimestamp)
-		while [ $shutdownSignal = 1 ]
+		while [ "$shutdownSignal" = 1 ]
 		do
 			sleepPulse
-			if [ $(( $(getPulseTimestamp) - $pulseStart )) -gt $REBOOTPULSEMAXIMUM ]
+			if [ $(( $(getPulseTimestamp) - $pulseStart )) -gt $REBOOT_PULSE_MAXIMUM_MILLISECONDS ]
 			then
 				echo "X730 Shutting down, halting Rpi ..."
 				sudo poweroff
@@ -43,7 +55,7 @@ do
 			fi
 			shutdownSignal=$(getShutdownSignal)
 		done
-		if [ $(( $(getPulseTimestamp) - $pulseStart )) -gt $REBOOTPULSEMINIMUM ]
+		if [ $(( $(getPulseTimestamp) - $pulseStart )) -gt $REBOOT_PULSE_MINIMUM_MILLISECONDS ]
 		then
 			echo "X730 Rebooting, recycling Rpi ..."
 			sudo reboot
diff --git a/src/x730shutdown.sh b/src/x730shutdown.sh
index 1b59678..a2354eb 100644
--- a/src/x730shutdown.sh
+++ b/src/x730shutdown.sh
@@ -1,10 +1,16 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 BUTTON=18
 
 pinctrl set "$BUTTON" op pn dl
 pinctrl set "$BUTTON" dh
 
+exSleep() {
+  sleep "$1" \
+	|| perl -e "select(undef, undef, undef, $1)" \
+	|| python3 -c "import time; time.sleep($1)"
+}
+
 # 1-2 sec for reboot, 3-7 for poweroff (default) 8+ crash (pull the plug)
 SLEEP=${1:-4}
 
@@ -14,7 +20,7 @@ if ! [[ $SLEEP =~ $re ]] ; then
 fi
 
 echo "X730 Shutting down..."
-sleep $SLEEP
+exSleep "$SLEEP"
 
 #restore GPIO 18
 pinctrl set "$BUTTON" dl
diff --git a/uninstall.sh b/uninstall.sh
index 79049e9..8eb50c2 100644
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_PATH="${BASH_SOURCE}"
 while [ -L "${SCRIPT_PATH}" ]; do

From 22980977002b7a9b4bb812c6df7d48fed3ed4315 Mon Sep 17 00:00:00 2001
From: Marvin Bruns <android.bruns@gmail.com>
Date: Tue, 15 Jul 2025 19:14:08 +0200
Subject: [PATCH 5/5] add python alternative for getPulseTimestamp (#5)

---
 src/x730button.sh   | 9 +++++++--
 src/x730shutdown.sh | 3 +--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/x730button.sh b/src/x730button.sh
index 09e65c1..d2a9631 100644
--- a/src/x730button.sh
+++ b/src/x730button.sh
@@ -10,10 +10,14 @@ BOOT=17
 pinctrl set "$BOOT" op pn dl
 pinctrl set "$BOOT" dh
 
+python() {
+  "$(command -v python3 || command -v python || command -v python2)" "$@"
+}
+
 exSleep() {
   sleep "$1" \
 	|| perl -e "select(undef, undef, undef, $1)" \
-	|| "$(command -v python3 || command -v python || command -v python2)" -c "import time; time.sleep($1)"
+	|| python -c "import time; time.sleep($1)"
 }
 
 getShutdownSignal() {
@@ -26,7 +30,8 @@ getPulseTimestamp() {
     local us="${EPOCHREALTIME/[^0-9]/}"
     echo "${us:0:-3}"
   else
-	  date +%s%3N
+    python -c "import time; print(int(time.time() * 1000))" \
+	  || date +%s%3N
 	fi
 }
 
diff --git a/src/x730shutdown.sh b/src/x730shutdown.sh
index a2354eb..b255520 100644
--- a/src/x730shutdown.sh
+++ b/src/x730shutdown.sh
@@ -14,8 +14,7 @@ exSleep() {
 # 1-2 sec for reboot, 3-7 for poweroff (default) 8+ crash (pull the plug)
 SLEEP=${1:-4}
 
-re='^[0-9\.]+$'
-if ! [[ $SLEEP =~ $re ]] ; then
+if ! [[ "$SLEEP" =~ ^[0-9\.]+$ ]] ; then
    echo "error: sleep time not a number" >&2; exit 1
 fi