*/10 * * * * joe /home/joe/fetchmailcheck.sh > /dev/null 2> /dev/null

This HowTo gives information on how to use the LEDs to display information on Unslung, and more specifically on how to use the disk 1 LED to indicate new mail, and disk 2 LED to indicate a new private message in irssi.

Make sure the directory /led exists and that it is writable by users.

LEDs by running Set_Led every second, setting them on if a file exists, and off otherwise.

This HowTo gives information on how to use the LEDs to display information on Unslung, and more specifically on how to use the disk 1 LED to indicate new mail, and disk 2 LED to indicate a new private message in irssi.

Taking control of the LEDs in Unslung

I couldn't get Unslung to stop updating the LEDs, so instead i made a script to update the disk

If the the files /led/disk1on and /led/disk2on exists, disk1 and disk2 LEDs is on otherwise they are off.

/home/joe/fetchmailcheck.sh: (Unslung)

/home/joe/fetchmailcheck.sh: (Debian)

#!/bin/sh         
/usr/bin/fetchmail -c --service 143 && sudo leds disk-1 fast || sudo leds disk-1 off

Debian note: I couldn't figure out how to allow regular users to change led settings, so i used sudo (apt-get install sudo) instead. But sudo by default asks for a password every 15minutes, i changed this by running (as root) "visudo" and add permissions to ex. user joe:

Defaults:joe     timestamp_timeout=-1
...
vk      ALL=(ALL) ALL

/home/joe/.irssi/scripts/fhilight.pl: (Unslung)

Make sure /dev/null is writeable by running chmod 777 /dev/null.

/home/joe/.irssi/scripts/fhilight.pl: (Debian)

use strict;
use Irssi;

sub fhilight {
    system("sudo leds disk-2 fast");
}
sub fseenhilight {
    system("sudo leds disk-2 off");
}

Irssi::signal_add('message private', 'fhilight');
Irssi::signal_add('window changed', 'fseenhilight');

And to actually load this script run "/script load fhilight" in irssi.

Making disk 1 LED indicate new mail

Making disk 2 LED indicate new private messages in irssi

This HowTo gives information on how to use the LEDs? to display information on Unslung, and more specifically on how to use the disk 1 LED to indicate new mail, and disk 2 LED to indicate a new private message in irssi.

Taking control of the LEDs? in Unslung

I couldn't get Unslung to stop updating the LEDs?, so instead i made a script to update the disk LEDs? by running Set_Led every second, setting them on if a file exists, and off otherwise.

If the the files /led/disk1on and /led/disk2on exists, disk1 and disk2 LEDs? is on otherwise they are off.

Make sure the directory /led exists and that it is writeable by users.

mkdir /led
chmod 777 /led

/root/ledsetter.sh:

#!/bin/sh
while [ 1 ]
do
        if [ -f /led/disk1on ]
        then
                Set_Led turn_on1
        else
                Set_Led turn_off1
        fi

        if [ -f /led/disk2on ]
        then
                Set_Led turn_on2
        else
                Set_Led turn_off2
        fi

        sleep 1
done

Make sure it's executable by running chmod +x /root/ledsetter.sh.

Run ledsetter.sh as root in the background with ./ledsetter.sh &. To make it work after reboots, create the following file (perhaps with a different number):

/opt/etc/init.d/S89ledsetter:

#!/bin/sh
/root/ledsetter.sh &

Make sure it's executable by running chmod +x /opt/etc/init.d/S89ledsetter.

Make disk 1 LED indicate new mail

This works by checking for new mail through fetchmail, and make sure the file /led/disk1on exists if there were new mail, and that it doesn't exist otherwise.

Install fetchmail by running ipkg install fetchmail as root.

Then (if user is joe) create /home/joe/.fetchmailrc with a single line similar to:
poll mail.isp.com protocol imap user "joe" password "joe_is_secretive"

Make sure the file is secret by running chmod 600 /home/joe.fetchmailrc.

/home/joe/fetchmailcheck.sh:

#!/bin/sh         
if /opt/bin/fetchmail -c --service 143
then
        touch /led/disk1on
else
        rm /led/disk1on
fi

Make sure it's executable by running chmod +x /home/joe/fetchmailcheck.sh.

The fetchmail parameter -c simply checks if there is new mail and then stops. The --service 143 parameter tells fetchmail that imap uses port 143 (why are the imap lines commented out in /etc/services ?).

To make this run every 10 minutes add the following line to /etc/crontab:
*/10 * * * * joe /home/joe/fetchmailcheck.sh

Make disk 2 LED indicate new private messages in irssi

This works by using a perl script for irssi that creates /led/disk2on when irssi sends a "message private" signal, and deletes the file on a "window changed" signal.

Make sure the /home/joe/.irssi/scripts directory exists by running mkdir -p /home/joe/.irssi/scripts.

/home/joe/.irssi/scripts/fhilight.pl:

use strict;
use Irssi;

sub fhilight {
    system("touch /led/disk2on 2> /dev/null");
}
sub fseenhilight {
    system("rm /led/disk2on 2> /dev/null");
}

Irssi::signal_add('message private', 'fhilight');
Irssi::signal_add('window changed', 'fseenhilight');

Make sure /dev/null is writeable by running chmod 777 /dev/null.