Script for battery percent and time remaining at the command prompt (not a question)

**unchiujar** · 08-12-2007

Add this to .bashrc and it will display the percent of the battery (charging/discharging) as well as the time remaining at the command prompt. Also displays it in the KDE konsole (only one I tested but it should work for gnome and xterm too)

Original script here
Enjoy!

Code:

# (c) 2003 Fabio 'farnis' Sirna <farnis@xxxxxxxxx>
# modified by unchiujar
# released under GPL3

BAT_INFO="/proc/acpi/battery/BAT1/info"
BAT_STATE="/proc/acpi/battery/BAT1/state"
AC_STATE="/proc/acpi/ac_adapter/ACAD/state"
function acpi_percent()
{
  #if battery is present get info else display NO BATTERY
  if [ `cat $BAT_STATE | grep present: |cut -f18 -d\ ` = "yes" ]; then
  {
   #using last full capacity because it's more accurate then design capacity
   CAPACITY=`cat $BAT_INFO |grep "last full capacity:"|cut -f9 -d\ `
   #juice remaining
   LEVEL=`cat $BAT_STATE | grep remaining |cut -f8 -d\ `
   #rate of charge/discharge
   RATE=`cat $BAT_STATE | grep rate | cut -f14 -d\ `
   ACPI_PERCENT=`echo $(( $LEVEL * 100 / $CAPACITY ))`
   #if discharging calculate the time remaining by LEVEL/RATE 
   #if charging calculate the time remaining by (CAPACITY-LEVEL)/RATE 
   if [ `cat $BAT_STATE | grep charging | cut -f12 -d\ ` = "discharging" ]; then
        BAT_REMAINING=`echo  $LEVEL / $RATE  | bc -l | cut -c1-4 `
      else
        BAT_REMAINING=`echo  \( $CAPACITY - $LEVEL \) / $RATE  | bc -l | cut -c1-3 `
     fi
    #integer for comparison, if less then 1 (coresponds to 1 hour) display minutes
    #else display in hour format
   TEST=`echo $BAT_REMAINING\>1 | bc `
   if [ "$TEST" -eq "0" ]; then
         BAT_REMAINING=`echo  $BAT_REMAINING*60 | bc | cut -f1 -d.`m
    else
         BAT_REMAINING=`echo $BAT_REMAINING`h
    fi
   #if charged display FULL
   if [ "$LEVEL" -eq "$CAPACITY" ]; then
    echo FULL
   else
    echo $ACPI_PERCENT% $BAT_REMAINING
   fi
  }
 else echo "NO BATTERY"
 fi
}
#display + or - depending on the state of the battery charging/discharging
function acpi_charge()
{
 ACPI_CHARGE=`cat $AC_STATE | cut -f20 -d\ `
 case $ACPI_CHARGE in
       *on-line*)
         ACPI_CHARGE="+" ;;
       *off-line*)
         ACPI_CHARGE="-" ;;
     esac
     echo $ACPI_CHARGE
}
#change the color depending on the charge and other param
function acpi_color()
   {
     if  [  "$(acpi_charge)"  =  "+"  ];  then
      {
       if [ `cat $BAT_STATE | grep present: |cut -f18 -d\ ` = "no" ]; then
        echo  "0;31"
       else echo  "1;32"
      fi
     }
     else
       case  $(acpi_percent)  in
          10?%)  echo  "0;32"  ;;
           9?%)  echo  "0;32"  ;;
           8?%)  echo  "0;32"  ;;
           7?%)  echo  "0;32"  ;;
           6?%)  echo  "0;32"  ;;
           5?%)  echo  "0;32"  ;;
           4?%)  echo  "0;33"  ;;
           3?%)  echo  "0;33"  ;;
           2?%)  echo  "0;33"  ;;
           1?%)  echo  "0;31"  ;;
            ?%)  echo  "0;31;5"  ;;
             *)  echo  "0;35"  ;;
       esac
     fi
   }
#set the prompt
function  acpi_color_prompt
   {
     #PS1='\[\e[$(acpi_color)m\][$(acpi_charge)$(acpi_percent)][\t]\u:\w\$>\[\e[0;37m\] '
     #PS1="\[\e[$(acpi_color)m\]\h\$\[\e[0m\]  "
     PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\][\t]\[\e[$(acpi_color)m\][$(acpi_charge)$(acpi_percent)] \w \$\[\033[00m\] '
  echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/$HOME/~}\007"
}

   #  linux  console
   if  [  "$TERM"  =  "linux"  ];  then
     PROMPT_COMMAND=acpi_color_prompt
   fi
case ${TERM} in
        xterm*|rxvt*|Eterm|aterm|kterm|gnome)
                PROMPT_COMMAND=acpi_color_prompt
esac


function  echo_acpi
   {
     echo -n "($(acpi_charge)$(acpi_percent)) "
   }

**rinjo** · 08-14-2007

Nice utility...
Worth giving a try...

**unchiujar** · 08-14-2007

Small change (the text console prompt didn't show up properly)

Code:

# (c) 2003 Fabio 'farnis' Sirna <farnis@xxxxxxxxx>
# modified by unchiujar
# released under GPL3

BAT_INFO="/proc/acpi/battery/BAT1/info"
BAT_STATE="/proc/acpi/battery/BAT1/state"
AC_STATE="/proc/acpi/ac_adapter/ACAD/state"
function acpi_percent()
{
  #if battery is present get info else display NO BATTERY
  if [ `cat $BAT_STATE | grep present: |cut -f18 -d\ ` = "yes" ]; then
  {
   #using last full capacity because it's more accurate then design capacity
   CAPACITY=`cat $BAT_INFO |grep "last full capacity:"|cut -f9 -d\ `
   #juice remaining
   LEVEL=`cat $BAT_STATE | grep remaining |cut -f8 -d\ `
   #rate of charge/discharge
   RATE=`cat $BAT_STATE | grep rate | cut -f14 -d\ `
   ACPI_PERCENT=`echo $(( $LEVEL * 100 / $CAPACITY ))`
   #if discharging calculate the time remaining by LEVEL/RATE 
   #if charging calculate the time remaining by (CAPACITY-LEVEL)/RATE 
   if [ `cat $BAT_STATE | grep charging | cut -f12 -d\ ` = "discharging" ]; then
        BAT_REMAINING=`echo  $LEVEL / $RATE  | bc -l | cut -c1-4 `
      else
        BAT_REMAINING=`echo  \( $CAPACITY - $LEVEL \) / $RATE  | bc -l | cut -c1-3 `
     fi
    #integer for comparison, if less then 1 (coresponds to 1 hour) display minutes
    #else display in hour format
   TEST=`echo $BAT_REMAINING\>1 | bc `
   if [ "$TEST" -eq "0" ]; then
         BAT_REMAINING=`echo  $BAT_REMAINING*60 | bc | cut -f1 -d.`m
    else
         BAT_REMAINING=`echo $BAT_REMAINING`h
    fi
   #if charged display FULL
   if [ "$LEVEL" -eq "$CAPACITY" ]; then
    echo FULL
   else
    echo $ACPI_PERCENT&#37; $BAT_REMAINING
   fi
  }
 else echo "NO BATTERY"
 fi
}
#display + or - depending on the state of the battery charging/discharging
function acpi_charge()
{
 ACPI_CHARGE=`cat $AC_STATE | cut -f20 -d\ `
 case $ACPI_CHARGE in
       *on-line*)
         ACPI_CHARGE="+" ;;
       *off-line*)
         ACPI_CHARGE="-" ;;
     esac
     echo $ACPI_CHARGE
}
#change the color depending on the charge and other param
function acpi_color()
   {
     if  [  "$(acpi_charge)"  =  "+"  ];  then
      {
       if [ `cat $BAT_STATE | grep present: |cut -f18 -d\ ` = "no" ]; then
        echo  "0;31"
       else echo  "1;32"
      fi
     }
     else
       case  $(acpi_percent)  in
          10?%)  echo  "0;32"  ;;
           9?%)  echo  "0;32"  ;;
           8?%)  echo  "0;32"  ;;
           7?%)  echo  "0;32"  ;;
           6?%)  echo  "0;32"  ;;
           5?%)  echo  "0;32"  ;;
           4?%)  echo  "0;33"  ;;
           3?%)  echo  "0;33"  ;;
           2?%)  echo  "0;33"  ;;
           1?%)  echo  "0;31"  ;;
            ?%)  echo  "0;31;5"  ;;
             *)  echo  "0;35"  ;;
       esac
     fi
   }
#set the prompt
function  acpi_color_prompt
   {
     #PS1='\[\e[$(acpi_color)m\][$(acpi_charge)$(acpi_percent)][\t]\u:\w\$>\[\e[0;37m\] '
     #PS1="\[\e[$(acpi_color)m\]\h\$\[\e[0m\]  "
     PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\][\t]\[\e[$(acpi_color)m\][$(acpi_charge)$(acpi_percent)] \w \$\[\033[00m\] '
}
#adds extra information for graphical consoles
case ${TERM} in
        xterm*|rxvt*|Eterm|aterm|kterm|gnome)
                PROMPT_COMMAND=acpi_color_prompt
                #sets up a proper title for graphical consoles
                 echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/$HOME/~}\007"
                   ;;
          linux)
               PROMPT_COMMAND=acpi_color_prompt
               ;;       
esac


function  echo_acpi
   {
     echo -n "($(acpi_charge)$(acpi_percent)) "
   }

If you have any suggestions for improvement let me know.

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Script for battery percent and time remaining at the command prompt (not a question)

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