Home Forums Hardware Mac Desktops & Notebooks PowerBook battery question

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#!/bin/bash

cd "${0%/*}"

# poll battery every x seconds
resolution=5

clear
echo
read -p "Be sure screen and computer sleep are disabled, press RETURN: " x
clear
echo
echo "Recommended steps for use:"
echo "1) disable energysaver settings that will put the computer to sleep"
echo "2) wait for the battery to become fully charged, or as far as it will go"
echo "3) start battmonitor"
echo "4) immediately unplug ac power"
echo "5) allow the computer to deplete the battery and go to forced sleep"
echo "6) plug the computer back into ac power and immediately wake it up"
echo "7) allow the computer to fully charge the battery"
echo "8) ctrl-c to stop battmonitor, and run battsummary to view resuls"
echo
echo

if [ -f battcheck.txt ] ; then
  echo "battcheck.txt file already exists."
  echo
  echo "If the computer shut down instead of sleep, you can resume"
  echo "the recording now to analyze the charge process as well."
  echo "This is best done immediately after ac power was restored."
  echo
  while true ; do
    read -p "Resume recording or Create new? (R/C): " rc
    rc=$(echo "$rc" | tr a-z A-Z)
    if [ "$rc" == "C" ] ; then
      rm battcheck.txt
      echo
      echo "(old recording file has been cleared)"
      break
    elif [ "$rc" == "R" ] ; then
      echo
      echo "(resuming recording)"
      break
    fi
  done
fi

echo
echo
echo "monitoring battery...  use battsummary to view results later."
echo
while true ; do
  x=$(system_profiler SPPowerDataType | grep -i remaining)
  y=$(date)
  echo "$y $x"
  echo "$y $x" >> battcheck.txt
  sleep $resolution
done

#!/bin/bash

# only thing left to do is trim off "fully charged" dups at the end of the input file

clear
cd "${0%/*}"

file3="battcheck.txt"
file1="battcheck0.txt"
file2="battcheck2.txt"

if ! [ -f "$file3" ] ; then
  echo "Cannot find \"$file3\" in this folder, did you run the battmonitor?"
  exit
fi

newfile="battsummary $(date "+%Y-%m-%d %H.%M").txt"
if [ -f "$newfile" ] ; then
  rm "$newfile"
fi
touch "$newfile"
echo
echo "Will create \"$newfile\""
echo

# trim off any duplicats at the end
x=$(tail -n 1 "$file3")
x=$(echo "$x" | cut -c $((${#x}-6))-99)
head -n $(($(cat "$file3" | wc -l)-$(cat "$file3" | grep "$x" | wc -l)+1)) "$file3" > "$file1"
r=$(($(cat "$file3" | wc -l)-$(cat "$file1" | wc -l)))
if [ $r -gt 10 ] ; then
  echo "(trimmed $r duplicate samples from end of $file3)"
  echo
fi

tot=$(($(cat "$file1" | wc -l)))
echo "Read $tot lines from \"$file1\""

echo
echo
echo

if [ -f "$file2" ] ; then
  rm "$file2"
fi
# read in source file, with lines like:
# Mon Aug 25 18:17:19 CDT 2008           Charge remaining (mAh): 6036
# and make another file with lines like:
# 1219706233	6036
# where first field is epoch seconds, and second field is mAh
# also, track min and max values of mAh
echo -n "      converting $file1 to raw data..."
n=0
lowcharge=9999
highcharge=0
while read x ; do
  file1epoch=$(date -j -f "%a %b %d %T %Z %Y" "$(echo "$x" | cut -c 1-28)" "+%s")
  file1mah=$(echo "$x" | cut -c $((${#x}-6))-999 | cut -d ' ' -f 2)
  echo ${file1epoch}$'\t'${file1mah} >> "$file2"
  n=$((n+1))
  echo -n $'\r'$((n*100/tot))" "
  if [ $lowcharge -gt $file1mah ] ; then
    lowcharge=$file1mah
  elif [ $highcharge -lt $file1mah ] ; then
    highcharge=$file1mah
  fi
done < "$file1"
echo "done"
echo
rm "$file1"

echo "mAh ranges from $lowcharge to $highcharge over $((highcharge-lowcharge))"
echo "mAh ranges from $lowcharge to $highcharge over $((highcharge-lowcharge))" >> "$newfile"


# 101 characters
bar="*****************************************************************************************************"

starttime=$(head -n 1 "$file2" | cut -f 1)
finishtime=$(tail -n 1 "$file2" | cut -f 1)

deltatime=$((finishtime-starttime))

echo "Time ranges from $(date -j -f "%s" "$starttime") to $(date -j -f "%s" "$finishtime") over $(date -j -f "%s" "$(($deltatime+21600))" "+%H:%M:%S")"
echo "Time ranges from $(date -j -f "%s" "$starttime") to $(date -j -f "%s" "$finishtime") over $(date -j -f "%s" "$(($deltatime+21600))" "+%H:%M:%S")" >> "$newfile"
echo "(in epoch seconds, $starttime to $finishtime over $deltatime)"
echo "(in epoch seconds, $starttime to $finishtime over $deltatime)" >> "$newfile"

echo
echo >> "$newfile"

deltacharge=$((highcharge-lowcharge))

pct=0
sampletime=0
gap=0
sampleinc=$(($deltatime/100))
while [ $pct -le 100 ] ; do
  finddtime=$(($deltatime*$pct/100))
  findtime=$(($starttime+$finddtime))
  while [ $sampletime -lt $findtime ] ; do
    read sample
    sampletime=$(echo "$sample"| cut -f 1)
  done
  samplecharge=$(echo "$sample"| cut -f 2)
  pctcharge=$(($samplecharge*100/$highcharge+1))
  sampledtime=$(($sampletime-$starttime))
  barcharge=$(echo "$bar" | cut -c 1-${pctcharge})
  reltimeh=$(date -j -f "%s" "$(($sampledtime+21600))" "+%H:%M:%S")
  sampletimeh=$(date -j -f "%s" "$(($sampletime))" "+%H:%M:%S")
  if [ $(($sampletime-$findtime)) -gt $sampleinc ] ; then
    gap=$((gap+1))
    if [ $lastok ] ; then
      echo "--:-:-- / --:-:-- --- (no readings)"
      echo "--:-:-- / --:-:-- --- (no readings)" >> "$newfile"
      lastok=
    fi
  else
    echo "$sampletimeh / $reltimeh $checkcharge $pctcharge $barcharge"
    echo "$sampletimeh / $reltimeh $checkcharge $pctcharge $barcharge" >> "$newfile"
    lastok=1
  fi
  pct=$((pct+1))
done < "$file2"

norm=100
amp=$((100*norm/(100-gap)))
#echo "gap=$gap, amp=$amp"
if [ $amp -gt 120 ] ; then
  echo
  echo >> "$newfile"
  echo "Normalizing to $norm readings..."
  echo "Normalizing to $norm readings..." >> "$newfile"
  echo
  echo >> "$newfile"
  pct2=0
  sampletime=0
  sampleinc=$(($deltatime/100))
  while [ $pct2 -le $amp ] ; do
    pct=$((pct2*100/amp))
    finddtime=$(($deltatime*pct2/amp))
    findtime=$(($starttime+$finddtime))
    while [ $sampletime -lt $findtime ] ; do
      read sample
      sampletime=$(echo "$sample"| cut -f 1)
    done
    samplecharge=$(echo "$sample"| cut -f 2)
    pctcharge=$(($samplecharge*100/$highcharge+1))
    sampledtime=$(($sampletime-$starttime))
    barcharge=$(echo "$bar" | cut -c 1-${pctcharge})
    reltimeh=$(date -j -f "%s" "$(($sampledtime+21600))" "+%H:%M:%S")
    sampletimeh=$(date -j -f "%s" "$(($sampletime))" "+%H:%M:%S")
    if [ $(($sampletime-$findtime)) -gt $sampleinc ] ; then
      if [ $lastok ] ; then
        echo "--:-:-- / --:-:-- --- (no readings)"
        echo "--:-:-- / --:-:-- --- (no readings)" >> "$newfile"
        lastok=
      fi
    else
      echo "$sampletimeh / $reltimeh $checkcharge $pctcharge $barcharge"
      echo "$sampletimeh / $reltimeh $checkcharge $pctcharge $barcharge" >> "$newfile"
      lastok=1
    fi
    pct2=$((pct2+1))
  done < "$file2"
fi


echo
echo "Output saved to \"$newfile\""
echo

rm "$file2"