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Sending key events to background script

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Old 02-20-2011
Sending key events to background script
Hi,

short summary:
I need to send keystrokes from USB keyboard to background (bash-)script. I guess I have to use read on the right devive board but how and which?

My details:

I got a small home server with some VMs using KVM/Qemu, all are suse 11.3. But in general I work on a client using a keyboard switch. Additionally, I have a scanner (HP Officejet 6500).

Now I want to send scans into a VM. I did not get the scan button to work but I want to achieve a similar solution. I bought a numerical keyboard with USB connector, connected it to the server and fowarded the port into the target VM.
Next there should be a background process listening to that kayboard and running a variety of scanimage scripts when the numbers are pressed.

I found the keyboard device under /dev/input/by-id/... and probably also under /dev/bus/usb/001/00[1-4]. Unfortunately, the output looks very "raw". I guess there must be an other device to connect to?

Thank you for your help,
Snowman
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LEARN ABOUT SUSE

lircmd

LIRCMD(8)								FSF								 LIRCMD(8)

NAME

       lircmd - LIRC mouse daemon translates infrared signals into mouse events

SYNOPSIS

       lircmd [options] [config-file]

DESCRIPTION

       This  daemon  can  simulate a MouseSystems, IntelliMouse or IMPS/2 type mouse. It gets the received buttons from lircd and converts them to
       mouse events. To make this possible, lircmd needs a config file located in /etc/lircmd.conf. In this file you have to determine which  but-
       ton  from  which  remote causes a mouse move or a mouse button click.  You can also specify a special button which activates or deactivates
       the mouse mode.

       -h --help
	      display this message

       -v --version
	      display version

       -n --nodaemon
	      don't fork to background

       -u --uinput
	      generate Linux input events

OPTIONS

       If you provide the --nodaemon option lircmd won't fork to background.

       On Linux systems the --uinput option will enable automatic generation of Linux input events. lircmd will open /dev/input/uinput and  inject
       the simulated mouse events into the Linux kernel rather than creating the /dev/lircm device.

FILES

       lircmd will use syslogd to output error messages. It depends on your system configuration where they will show up.

DAEMONS

       lircd  and  lircmd are daemons. You should start them in some init script depending on your system. There are some example scripts for dif-
       ferent distributions in the contrib directory. lircmd has to be started after lircd as it connects to the socket lircd provides.

       If you start lircd or lircmd from your shell prompt you will usually get back immediately to the prompt. Often people think that  the  pro-
       gram has died. But this is not an error. lircd and lircmd are daemons. Daemons always run in background.

SEE ALSO

       The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.

lircmd 0.8.7pre1						     May 2010								 LIRCMD(8)