Free 7.2v battery pack software for linux

Wmbattery displays the status of your laptops battery in a small icon. This includes if it is plugged in, if the battery is charging, how many minutes of battery life remain, battery life remaining (with both a percentage and a graph), and battery status (high - green, low - yellow, or critical - red).
Theres nothing in the program that makes it require WindowMaker, except maybe the look. It can be docked in WindowMaker or Aftersteps dock.
Wmbattery is based heavily on wmapm by Chris D. Faulhaber.
Enhancements:
- Improved icon layout. I crammed the same information into less space while making the icon more elegant and visually pleasing (IMHO).
- Easier to drag onto dock.
- It consumes a little less memory.
- Uses only 10 colors.
- ACPI support, including multiple battery support and battery charging completion countdown timer.
- Support for getting battery status from the sonypi driver instead of APM, for some Sony laptops that do not have apm support.
- Can make its own estimatess of time remaining or time until full charge, even if APM does not.

Battery OSD is a program that displays battery information and other types of system information on screen with the OSD library.

battery_monitor is a small battery monitoring program for Linux, that you can run in the background from your desktop session or launch from the boot scripts. battery_monitor is designed with simple goals in mind and provides acoustic and/or visual alerts when your battery level is low or when it is fully charged, so you can take apropiate actions.
Compilation and installation
To compile and install battery_monitor you need several components installed on your computer:
C compiler (probably GCC) and the standard C libraries and headers.
POSIX threads libraries and headers (pthread.h).
X11 libraries and headers.
xine libraries and headers.
make tool.
To compile the program, once you have installed everything needed, run make from the source code directory. To install it, run make install after compilation. This last step may require superuser privileges depending on the selected installation directory. The following parameters may be useful while compiling and installing:
CC: It lets you specify the C compiler name instead of gcc.
CFLAGS: You can use it to change the optimization level and/or specify additional header directories by using extra -I arguments.
LDFLAGS: In case the compiler cant find some of the required libraries, use this parameter to pass additional -L arguments in the link step.
PREFIX: The default prefix is /usr/local. If you change this parameter you should change it in both the compilation and the installation step. Its only used in the installation step for now, but this may change.
DESTDIR: Useful for package maintainers, this lets you specify a fake root directory in the installation step.
Compilation and installation parameters are appended to the make command in variable assignment form. For example: make install PREFIX=/usr DESTDIR=/tmp/fake_rootdir.
Enhancements:
- Several bugs have been corrected.
- They surfaced with recent releases of the Xorg X server, and made the program behave incorrectly when displaying signs.
- The underlying sign code has been rewritten, and the program is now lighter on resources as a collateral effect. In addition, CMake support has been added to the build system.

Tie::Array::PackedC is a tie a Perl array to a C-style array (packed; elements of a single, simple data type).

SYNOPSIS

use Tie::Array::PackedC qw(packed_array packed_array_string);
my $ref=packed_array(1,2,3,4);
my $ref2=packed_array_string(my $s,1,2,3,4);

use Tie::Array::PackedC Double=>d;
tie my @array,Tie::Array::PackedC::Double,1..10;
$array[0]=1.141;

Provides a perl array interface into a string containing a C style array. In other words the string is equivelent to the string that would be returned from the equivelent pack command (defaulting to pack type "l!") using a normal array of the same values. Eg:

my @foo=(1..10);
my $string=pack "l!*",@foo;

leaves $string in basically the same condition as

my (@foo,$string);
tie @foo,Tie::Array::PackedC,$string,1..10;

Its only basically the same and not exactly the same because the tie version may be longer due to preallocation.

KBatt is a cute little notebook battery applet for your KDE panel.

It uses the APM interface in your kernel to show a cute little display on your panel: you can see the AC status, the battery level, and how much time you have left.

Build & install:

run ./configure
make
make install (as root)
add the applet to your KDE panel & enjoy!

This is small ncurses based bar designed to match the coolness of evilWM. evilbar sports a right-aligned clock, APM status and XMMS control
evilbar has successfully been built and tested on the following systems:
- FreeBSD 4.3, 4.6, 4.7, 5.0, -CURRENT
- Debian 3.0 (kernel 2.4.18-bf2.4)
- RedHat 7.3 (kernel 2.4.18-3)
Installation:
Basic:
This will get you the vanilla evilbar with XMMS control and the clock.
./configure
make
make install
Advanced:
./configure has a few special evilbar options:
--enable-apm Enables the APM module that shows battery-status
--disable-xmms Disable XMMS control

Gnome Memory Blocks project is a concentration game for GNOME.

This is GNOMEs version of the `memory blocks game originaly come from Semantec game pack for Win-3.11

FluxBat is an ACPI based battery monitor for the fluxbox window manager. It includes two parts: a daemon process that runs the update script and the update script itself.
The whole software contains only about 100 lines of code and is easy to use by including only one line in the menu configuration file of fluxbox.
Enhancements:
- This release only forces the fluxbox menu reload if the battery state really changed.