baraction.sh

   1 #!/bin/sh
   2
   3 _print_cpu() {
   4         typeset -R4 _1=${1} _2=${2} _3=${3} _4=${4} _5=${5}
   5         echo -n "CPU:${_1}% User${_2}% Nice${_3}% Sys${_4}% Int${_5}% Idle     "
   6 }
   7
   8 print_cpu() {
   9         OUT=""
  10         # iostat prints each column justified to 3 chars, so if one counter
  11         # is 100, it jams up agains the preceeding one. sort this out.
  12         while [ "${1}x" != "x" ]; do
  13                 if [ ${1} -gt 99 ]; then
  14                         OUT="$OUT ${1%100} 100"
  15                 else
  16                         OUT="$OUT ${1}"
  17                 fi
  18                 shift;
  19         done
  20         _print_cpu $OUT
  21 }
  22
  23 print_apm() {
  24         BAT_STATUS=$1
  25         BAT_LEVEL=$2
  26         AC_STATUS=$3
  27
  28         if [ $AC_STATUS -ne 255 -o $BAT_STATUS -lt 4 ]; then
  29                 if [ $AC_STATUS -eq 0 ]; then
  30                         echo -n "on battery (${BAT_LEVEL}%)"
  31                 else
  32                         case $AC_STATUS in
  33                         1)
  34                                 AC_STRING="on AC: "
  35                                 ;;
  36                         2)
  37                                 AC_STRING="on backup AC: "
  38                                 ;;
  39                         *)
  40                                 AC_STRING=""
  41                                 ;;
  42                         esac;
  43                         case $BAT_STATUS in
  44                         4)
  45                                 BAT_STRING="(no battery)"
  46                                 ;;
  47                         [0-3])
  48                                 BAT_STRING="(battery ${BAT_LEVEL}%)"
  49                                 ;;
  50                         *)
  51                                 BAT_STRING="(battery unknown)"
  52                                 ;;
  53                         esac;
  54
  55                         FULL="${AC_STRING}${BAT_STRING}"
  56                         if [ "$FULL" != "" ]; then
  57                                 echo -n "$FULL"
  58                         fi
  59                 fi
  60         fi
  61 }
  62
  63 while :; do
  64         # instead of sleeping, use iostat as the update timer.
  65         # cache the output of apm(8), no need to call that every second.
  66         /usr/sbin/iostat -C -c 3600 |&  # wish infinity was an option
  67         APM_DATA=""
  68         I=0
  69         while read -p; do
  70                 if [ $(( ${I} % 59 )) -eq 0 ]; then
  71                         APM_DATA=`/usr/sbin/apm -alb`
  72                 fi
  73                 if [ $I -gt 2 ]; then
  74                         print_cpu $REPLY
  75                         print_apm $APM_DATA
  76                         echo ""
  77                 fi
  78                 I=$(( ${I} + 1 ));
  79         done
  80 done