[gentoo-user] Battery charge status script for term or text console

[Walter Dnes]

The attached script requires "make menuconfig" to have

Power management and ACPI options  --->
[*] ACPI (Advanced Configuration and Power Interface) Support  --->
<*>   Battery

or CONFIG_ACPI_BATTERY enabled if you do .config manually.

  The script reads /sys/class/power_supply/BAT1/uevent on a laptop and
calculates the percentage of battery charge.  Because it only reads from
/sys, and does not write, it can be run by a regular user.  The script
is primitive, and has to be stopped with {CTRL}{C}.

  The script runs in text mode, and can run in xterm or even a pure text
console.  I've removed the #!/bin/bash at the top of the attached file
and chmod'ed it non-executable.  The mailing list software seems to
reject any such attachments.  You can source the file as is, or chmod it
executable, and insert #!/bin/bash at the top.  Note that there is an
ANSI escape sequence in the script, to keep the output in one location.
Regular cut-and-paste can fail if you try to copy from the screen.

-- 
Walter Dnes <waltdnes@××××××××.org>
I don't run "desktop environments"; I run useful applications