shell/alias: add mc alias for machinectl

[config/dotfiles.git] / bin / battery.pl

diff --git a/bin/battery.pl b/bin/battery.pl
index 0bdaae04c1d8829a33a0edaf2e8a4fb709ae5289..d5aced9064668c417d6cce92ff379a7ecc9a2747 100755 (executable)
--- a/bin/battery.pl
+++ b/bin/battery.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/perl
 
-# Copyright (C) 2011-2012  Simon Ruderich
+# Copyright (C) 2011-2013  Simon Ruderich
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -20,15 +20,26 @@ use strict;
 use warnings;
 
 
-my $path = '/sys/class/power_supply/BAT0/uevent';
+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/class/power_supply/BAT*.\n";
+    exit 1;
+}
+if (scalar @ARGV == 1) {
+    @ARGV = ('', $ARGV[0]);
+}
+
+my $path = "$ARGV[1]/uevent";
 
 # No battery available.
-if (! -e $path) {
+if (not -e $path) {
+    print STDERR "'$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 %battery;