use warnings;
-my $temperature_path = '/sys/devices/virtual/hwmon/hwmon0/temp1_input';
-my $critical_path = '/sys/devices/virtual/hwmon/hwmon0/temp1_crit';
+if (scalar @ARGV != 1 and (scalar @ARGV != 2 or not $ARGV[0] =~ /-[st]/)) {
+ print STDERR "Usage: $0 [-s | -t] <path/to/device>\n";
+ print STDERR "\n";
+ print STDERR "Normally this is /sys/devices/platform/*.\n";
+ exit 1;
+}
+if (scalar @ARGV == 1) {
+ @ARGV = ('', $ARGV[0]);
+}
+
+my $temperature_path = "$ARGV[1]/temp1_input";
+my $critical_path = "$ARGV[1]/temp1_crit";
# No temperature information available.
-if (! -e $temperature_path || ! -e $critical_path) {
+if (not -e $temperature_path or not -e $critical_path) {
+ print STDERR "'$temperature_path' or '$critical_path' not found.\n";
exit 1;
}
-my $screen_mode = (defined $ARGV[0] and $ARGV[0] eq '-s');
-my $tmux_mode = (defined $ARGV[0] and $ARGV[0] eq '-t');
+my $screen_mode = ($ARGV[0] eq '-s');
+my $tmux_mode = ($ARGV[0] eq '-t');
my $temperature;
my $critical;
my $file;
open $file, '<', $temperature_path or die $!;
$temperature = <$file>;
-close $file;
+close $file or die $!;
open $file, '<', $critical_path or die $!;
$critical = <$file>;
-close $file;
+close $file or die $!;
my $value = int($temperature / 1000);
my $risk = ($critical - $temperature)/$critical;
+$value .= "\xb0"; # degree symbol in UTF-8
+
# GNU screen mode with colors.
if ($screen_mode) {
my $color;