If vcgencmd is not installed don't try to execute it

More a x86 fix as this package is not installed nor will it return any useful info.

scripts/extra_info.sh

@@ -4,63 +4,67 @@
 echo "........................................IPs....................................."
 echo "LAN IP: $(hostname -I|cut -d' ' -f1)"
 echo "Public IP: $(curl -s4 ifconfig.co)"
-echo "..................................\`vcgencmd stats\`.............................."
-sudo -u$USER vcgencmd get_throttled
-hex=$(sudo -u$USER vcgencmd get_throttled|cut -d'x' -f2)
-binary=$(echo "ibase=16;obase=2;$hex"|bc)
-echo "Binary: $binary";
-revbinary=$(echo $binary|rev)
-if echo $binary | grep 1 ;then
-  echo "ISSUES DETECTED"
-  if [ ${revbinary:0:1} -eq 1 &> /dev/null ];then
-    message="Under-voltage detected"
-    echo "$message"
-    dmesg -H | grep -i voltage
-  fi
-  if [ ${revbinary:1:1} -eq 1 &> /dev/null ];then
-    message="Arm frequency capped"
-    echo "$message"
-    dmesg -H | grep -i frequen
-  fi
-  if [ ${revbinary:2:1} -eq 1 &> /dev/null ];then
-    message="Currently Throttled"
-    echo "$message"
-    dmesg -H | grep -i throttl
-  fi
-  if [ ${revbinary:3:1} -eq 1 &> /dev/null ];then
-    message="Soft temperatue limit active"
-    echo "$message"
-    dmesg -H | grep -i temperature 
-  fi
-  if [ ${revbinary:16:1} -eq 1 &> /dev/null ];then
-    message="Under-voltage has occurred"
-    echo "$message"
-    dmesg -H | grep -i voltage
-  fi
-  if [ ${revbinary:17:1} -eq 1 &> /dev/null ];then
-    message="Arm frequency capping has occurred"
-    echo "$message"
-    dmesg -H | grep -i frequen
-  fi
-  if [ ${revbinary:18:1} -eq 1 &> /dev/null ];then
-    message="Throttling has occurred"
-    echo "$message"
-    dmesg -H | grep -i throttl
-  fi
-  if [ ${revbinary:19:1} -eq 1 &> /dev/null ];then
-    message="Soft temperature limit has occurred"
-    echo "$message"
-    dmesg -H | grep -i temperature 
+if [ ! "$(dpkg -l | ! grep -q "vcgencmd")" ]
+then
+  echo "..................................\`vcgencmd stats\`.............................."
+  sudo -u$USER vcgencmd get_throttled
+  hex=$(sudo -u$USER vcgencmd get_throttled | cut -d'x' -f2)
+  binary=$(echo "ibase=16;obase=2;$hex" | bc)
+  echo "Binary: $binary"
+  revbinary=$(echo $binary | rev)
+  if echo $binary | grep 1; then
+    echo "ISSUES DETECTED"
+    if [ ${revbinary:0:1} -eq 1 ] &>/dev/null; then
+      message="Under-voltage detected"
+      echo "$message"
+      dmesg -H | grep -i voltage
+    fi
+    if [ ${revbinary:1:1} -eq 1 ] &>/dev/null; then
+      message="Arm frequency capped"
+      echo "$message"
+      dmesg -H | grep -i frequen
+    fi
+    if [ ${revbinary:2:1} -eq 1 ] &>/dev/null; then
+      message="Currently Throttled"
+      echo "$message"
+      dmesg -H | grep -i throttl
+    fi
+    if [ ${revbinary:3:1} -eq 1 ] &>/dev/null; then
+      message="Soft temperatue limit active"
+      echo "$message"
+      dmesg -H | grep -i temperature
+    fi
+    if [ ${revbinary:16:1} -eq 1 ] &>/dev/null; then
+      message="Under-voltage has occurred"
+      echo "$message"
+      dmesg -H | grep -i voltage
+    fi
+    if [ ${revbinary:17:1} -eq 1 ] &>/dev/null; then
+      message="Arm frequency capping has occurred"
+      echo "$message"
+      dmesg -H | grep -i frequen
+    fi
+    if [ ${revbinary:18:1} -eq 1 ] &>/dev/null; then
+      message="Throttling has occurred"
+      echo "$message"
+      dmesg -H | grep -i throttl
+    fi
+    if [ ${revbinary:19:1} -eq 1 ] &>/dev/null; then
+      message="Soft temperature limit has occurred"
+      echo "$message"
+      dmesg -H | grep -i temperature
+    fi
   fi
+
+  echo "....................................Clock Speeds................................"
+  for i in arm core h264 isp v3d uart pwm emmc pixel vec hdmi dpi; do
+    echo -e "${i}:\t$(sudo -u$USER vcgencmd measure_clock ${i})"
+  done
+  echo "........................................Volts..................................."
+  for i in core sdram_c sdram_i sdram_p; do
+    echo -e "${i}:\t$(sudo -u$USER vcgencmd measure_volts ${i})"
+  done
 fi
-echo "....................................Clock Speeds................................"
-for i in arm core h264 isp v3d uart pwm emmc pixel vec hdmi dpi;do
-  echo -e "${i}:\t$(sudo -u$USER vcgencmd measure_clock ${i})"
-done
-echo "........................................Volts..................................."
-for i in core sdram_c sdram_i sdram_p;do
-  echo -e "${i}:\t$(sudo -u$USER vcgencmd measure_volts ${i})"
-done
 echo ".....................................Caddyfile.................................."
 cat /etc/caddy/Caddyfile
 echo ".................................... Crontab...................................."