#!/bin/sh -e
usage () {
echo "Usage: $0 [-h|--help|-v|--verbose]"
echo ""
echo " -h | --help print this help"
echo " -v | --verbose be verbose (messages go to STDOUT)"
echo " -V | --version print version information"
echo " -D | --debug debug mode"
echo ""
echo " Possible return values:"
echo " 0 most likely running on a laptop"
echo " 1 most likely NOT running on a laptop"
echo " 2 called with unknown option, -h, --help, -V, --version, -D or --debug"
}
PRINTIT="/bin/true" # /bin/true accepts any option but never prints anything
EXIT="exit" # replaced in debug mode by /bin/true
# Check wether we were asked to be verbose
if [ "$1" != "" ]; then
case "$1" in
"-v"|"--verbose")
PRINTIT="echo"
;;
"-V"|"--version")
echo "Version: 0.16"
exit 2
;;
"-h"|"--help")
usage
exit 2
;;
"-D"|"--debug")
EXIT="/bin/true"
set -x
;;
*)
echo "UNKNOWN OPTION: $1"
usage
exit 2
;;
esac
fi
# Are we a mac?
if test -d /proc/pmu; then
batteries=$(grep Battery /proc/pmu/info | cut -f2 -d:)
if test "$batteries" -ne 0; then
$PRINTIT "We're a laptop (Mac: batteries found)" >&2;
$EXIT 0
fi
exit 1
fi
if dmidecode="$(command -v dmidecode)" && [ -r /dev/mem -a -x "$dmidecode" ]
then
# dmidecode to grab the Chassis type
dmitype=$("$dmidecode" --string chassis-type)
if test "$dmitype" = "Notebook" || \
test "$dmitype" = "Portable" || \
test "$dmitype" = "Laptop" || \
test "$dmitype" = "Hand Held"; then
$PRINTIT "We're a laptop (dmidecode returned \"$dmitype\")" >&2
$EXIT 0
fi
# turn back on for debugging
#echo "$dmitype"
fi
if [ -e /sys/devices/virtual/dmi/id/chassis_type ] ; then
chassis_type="$(cat /sys/devices/virtual/dmi/id/chassis_type)"
case "$chassis_type" in
8) # Portable
$PRINTIT "We're a portable (chassis_type is $chassis_type)" >&2
$EXIT 0
;;
9) # Laptop
$PRINTIT "We're a laptop (chassis_type is $chassis_type)" >&2
$EXIT 0
;;
10) # Notebook
$PRINTIT "We're a notebook (chassis_type is $chassis_type)" >&2
$EXIT 0
;;
11) # Hand Held
$PRINTIT "We're a hand held (chassis_type is $chassis_type)" >&2
$EXIT 0
;;
esac
fi
# check for non device ACPI batteries
/sbin/modprobe battery 2> /dev/null || true
sysfs_power_supply=/sys/class/power_supply
if [ -d $sysfs_power_supply ]; then
for power_supply in $(ls $sysfs_power_supply)
do
if (
grep -q Battery $sysfs_power_supply/$power_supply/type 2>/dev/null
) && (
! grep -q Device $sysfs_power_supply/$power_supply/scope 2>/dev/null
)
then
$PRINTIT "We're a laptop (non device ACPI batteries found)" >&2
$EXIT 0
fi
done
fi
# old interface:
if [ -d /proc/acpi/battery ]; then
results=`find /proc/acpi/battery -mindepth 1 -type d`
if [ ! -z "$results" ]; then
$PRINTIT "We're a laptop (ACPI batteries found)" >&2
$EXIT 0
fi
fi
# check for APM batteries. This sucks, because we'll only get a valid response
# if the laptop has a battery fitted at the time
if [ -f /proc/apm ]; then
battery=`awk '{print $6}' </proc/apm`
if [ "$battery" != "0xff" ] && [ "$battery" != "0x80" ]; then
$PRINTIT "We're a laptop (APM batteries found)" >&2
$EXIT 0
fi
fi
$PRINTIT "We're not on a laptop (no relevant hint found)" >&2
$EXIT 1
Mini Shell