Our aliases are spammed like any other account, but filtering on them would require making a real account. I wanted to be able to filter aliases without creating accounts for everything. My first solution was to create an account and filter on that one, then using $original_local_part I could forward to a filtered alias. This works but if someone discovers the filtered alias, they can bypass the filtering.
We are using gnarwl for vacation notification and I would like gnarwl to only reply if the current time is in the vacationStart vacationEnd window.
Here is the queryfilter to do that using the following information:
$recepient - receiver of the message
$time - current time in seconds since the epoch
I often use dd to copy large files or make images from hard drives. It's annoying to watch something without any progress indicator, so I use the little known kill switch on dd.
From the man page:
Sending a USR1 signal to a running ‘dd’ process makes it print I/O statistics to standard error and then resume copying.
$ dd if=/dev/zero of=/dev/null& pid=$!
We have a watchport/w sensor and I wanted to start monitoring it with zabbix. I did a little googling and the only thing this sensor does is set the DCD line on a usb modem to high when there is water, otherwise it's low (not connected).