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#!/bin/bash
ROTATION_DELAY=10
NET_INT=eth0
HDD_DEV=/dev/md0
RAID_DEV=/data
# LCD Flags
LCD_SHOW_MEM=1
LCD_SHOW_CPU=1
LCD_SHOW_SYS=1
LCD_SHOW_NET=1
LCD_SHOW_IP=1
LCD_SHOW_TIME=1
LCD_SHOW_HDD=1
Count=0
Coretemp="/sys/devices/platform/coretemp.0/temp2_input"
Systemp="/sys/devices/platform/w83627ehf.2576/temp2_input"
button="/sys/devices/system/rn_button/rn_button0/backup_button"

# ---- LCD Management Functions ----
# Change state of LCD backlight
function set_backlighton
{
               echo 1 > /sys/devices/system/rn_lcd/rn_lcd0/lcd_backlight
}
# Change state of LCD backlight
function set_backlightoff
{
               echo 0 > /sys/devices/system/rn_lcd/rn_lcd0/lcd_backlight
               sleep 5
}
# Write string to LCD device
function print_lcd
{
   #echo $Count
#       b=`cat /sys/devices/system/rn_button/rn_button0/backup_button`
#       if [ $b = 1 ]; then
#            set_backlighton
#            nohup /data/Tims/vobcopyUSB 2>/dev/null&
#            Count=1
#       fi 

       if [ $Count -gt 0 ]; then
            Count=`expr $Count + 1`
       fi       
       if [ $Count -gt 30 ]; then
           reset_lcd
           Count=0
       fi   

       if [ $Count -gt 0 ]; then
       if [ $1 = 0 ]; then
              		printf "%-17.17s" $2 > /sys/devices/system/rn_lcd/rn_lcd0/lcd_line1
       else
              		printf "%-17.17s" $2 > /sys/devices/system/rn_lcd/rn_lcd0/lcd_line2
       fi     
       fi
      
}
function reset_lcd
{    
        printf "%-17.17s" " " > /sys/devices/system/rn_lcd/rn_lcd0/lcd_line1
        printf "%-17.17s" " " > /sys/devices/system/rn_lcd/rn_lcd0/lcd_line2
        sleep 1
        set_backlightoff
}
# ---- Statistics Generation Functions ----
# Each function below produces a string of information for display on one line of the LCD.
# Generate memory usage info
function get_meminfo
{
       local s=""
       sMemUsed=$(free -m | awk 'NR == 2 {print $3;}')
       sMemTotal=$(free -m | awk 'NR == 2 {print $2;}')
       s="RAM:"$sMemUsed"MB/"$sMemTotal"MB"
       echo $s
}
# Generate swap usage info
function get_swapinfo
{
       local s=""
       sSwapUsed=$(free -m | awk 'NR == 4 {print $3;}')
       sSwapTotal=$(free -m | awk 'NR == 4 {print $2;}')
       s="Swap:"$sSwapUsed"MB/"$sSwapTotal"MB"
       echo $s
}
# Generate system availability info
function get_uptimeinfo
{
       local s=""
       sUp=$(cat /proc/uptime | awk '{print $1;}' | cut -f1 -d.)
       let "sUp /= 3600"
       # sUnit=$(uptime | awk '{print $4;}' | cut -b1)
       sUsers=$(uptime | awk '{print $4;}')
       s="Up:"$sUp"h/Users:"$sUsers
       echo $s
}
# Generate domain name info
function get_hostnameinfo
{
       local s=""
       sHostname=$(hostname -f)
       s=$sHostname
       echo $s
}
# Generate CPU load average info
function get_loadinfo
{
       local s=""
       sOneLoad=$(uptime | awk '{print $8;}' | cut -d, -f1)
       sFifteenLoad=$(uptime | awk '{print $10;}' | cut -d, -f1)
       s="Load:"$sOneLoad"/"$sFifteenLoad
       echo $s
}
# Generate CPU processes info
function get_procinfo
{
       local s=""
       sProcs=$(ps ax | wc -l | awk '{print $1}')
       s="Processes:"$sProcs
       echo $s
}
# Generate network interface received data info
function get_ethrxinfo
{
       local s=""
       sRX=$(ifconfig $NET_INT | grep "RX bytes:" | awk '{print $2}' | cut -b7-64)
       let "sRX /= 1048576"
       s="Rcvd:"$sRX"MB"
       echo $s
}
# Generate network interface sent data info
function get_ethtxinfo
{
       local s=""
       sTX=$(ifconfig $NET_INT | grep "RX bytes:" | awk '{print $6}' | cut -b7-64)
       let "sTX /= 1048576"
       s="Sent:"$sTX"MB"
       echo $s
}
# Generate network interface IP address info
function get_ipinfo
{
       local s=""
       sIPV4=$(ifconfig $NET_INT | awk 'NR == 2 {print $2;}' | cut -b6-19)
       s="IP:"$sIPV4
       echo $s
}
# Generate network interface MTU info
function get_mtuinfo
{
       local s=""
       sMTU=$(ifconfig $NET_INT | awk 'NR==4 {print $5}')
       s=$sMTU
       echo $s
}
# Generate system date info
function get_dateinfo
{
	Ct=`cat $Coretemp`
	C=`expr $Ct / 1000`
	echo "CpuTemp:"$C"'C"
}
# Generate system time info
function get_timeinfo
{
	St=`cat $Systemp`
	S=`expr $St / 1000`
	echo "SysTemp:"$S"'C"
}
# Generate free disc info for system partition
function get_syshdinfo
{
       local s=""
       sUsedSys=$(df -h $HDD_DEV | awk 'NR == 2 {print $3}')
       sTotalSys=$(df -h $HDD_DEV | awk 'NR == 2 {print $2}')
       s="Sys:"$sUsedSys"/"$sTotalSys
       echo $s
}
# Generate free disc info for raid array partition
function get_raidhdinfo
{
       local s=""
       sUsedRaid=$(df -h $RAID_DEV | awk 'NR == 2 {print $3}')
       sTotalRaid=$(df -h $RAID_DEV | awk 'NR == 2 {print $2}')
       s="RAID:"$sUsedRaid"/"$sTotalRaid
       echo $s
}

  set_backlightoff
# ---- Main Function ----
# Display a series of statistics on the LCD
while :
do

# Display Memory Information
if [ $Count -gt 0 ]; then

if [ $LCD_SHOW_MEM = 1 ]; then
       print_lcd 0 `get_meminfo`
       print_lcd 1 `get_swapinfo`
       sleep $ROTATION_DELAY
fi

# Display Disk Space Information
if [ $LCD_SHOW_HDD = 1 ]; then
       print_lcd 0 `get_syshdinfo`
       print_lcd 1 `get_raidhdinfo`
       sleep $ROTATION_DELAY
fi

# Display CPU Information
if [ $LCD_SHOW_CPU = 1 ]; then
       print_lcd 0 `get_procinfo`
       print_lcd 1 `get_loadinfo`
       sleep $ROTATION_DELAY
fi

# Display System Information
if [ $LCD_SHOW_SYS = 1 ]; then
       print_lcd 0 `get_hostnameinfo`
       print_lcd 1 `get_uptimeinfo`
       sleep $ROTATION_DELAY
fi

# Display Network Transport Information
if [ $LCD_SHOW_NET = 1 ]; then
       print_lcd 0 `get_ethtxinfo`
       print_lcd 1 `get_ethrxinfo`
       sleep $ROTATION_DELAY
fi

# Display Network IP Information
if [ $LCD_SHOW_IP = 1 ]; then
       print_lcd 0 `get_ipinfo`
       print_lcd 1 `get_mtuinfo`
       sleep $ROTATION_DELAY
fi

# Display Date and Time Information
if [ $LCD_SHOW_TIME = 1 ]; then
       print_lcd 0 `get_dateinfo`
       print_lcd 1 `get_timeinfo`
       sleep $ROTATION_DELAY
fi

else
     sleep $ROTATION_DELAY  
      b=`cat /sys/devices/system/rn_button/rn_button0/backup_button`
       if [ $b = 1 ]; then
            set_backlighton
            nohup /data/Tims/vobcopyUSB 2>/dev/null&
            Count=1
       fi 

fi
done