Section: Misc. Reference Manual Pages (0.85)
Updated: 2002 Apr 07
ledblink - Blink keyboard/parport LEDs.
can blink all the different keyboard LEDs and also LEDs connected to
the parport. An instance of the program is run in the background and
controlled by consecutive calls of ledblink. Each LED can be accessed
independently and the blinking rate can be modified to show numbers
(the number of mails waiting in your inbox for example).
Because of the kernel calls required to blink the LEDs or to
access the parport, ledlblink must be run with root privilege.
It should be safe to run ledblink SUID root if you wish.
Blink the LED. A instance of ledblink must already be running for that
specific LED. Typically you will also specify which led the process is
controlling. If this is called more than once, the LED will blinking
rate will be increased.
Decrease blinking rate of the LED.
Stop blinking the LED.
Set the LED state to on.
Set the LED state to off.
Toggle the LED state.
Attempts to kill a running ledblink process.
- -l <led>
Specifies the led to blink. Valid options are
If not specified scroll lock is chosen by default.
Quiet. Use -qq for very quiet.
Verbose. Use up to -vvvv for more messages that you could possibly want.
Debug. Prevents the program from forking into the background
and detaching from the terminal. You can try this if mailblink is
not working properly.
Starts ledblink. It will wait for a signal send by
and then blink the
- ledblink -k
Attempts to kill the ledblink process controlling the scroll
- ledblink -k -l num
Attempts to kill the ledblink process controlling the num
- ledblink -q
Attempts to start ledblink quietly. Won't print status
messages, or complain if it has problems starting.
mailblink(1), mailleds(1), tleds(1)
ledblink was written by Jörg Mensmann.
It is heavily based on mailblink 0.7 by Donald J Bindner.
Some support code was written by Anders Johansson.
Parport support by Martin Renold.
ledblink has a homepage at:
Copyrighted and released under GNU General Public License (GPL).
with bug reports.
- SEE ALSO