I’ve been put into a situation where the most basic php function mail() has been giving me a headache. It’s because there are no parameters to be specified and you cannot send an email without sacrificing security and to be perfectly clear; you cannot even send email the right way using it in most cases. Continue reading
Author Archives: Pavel Beníšek
How to install / upgrade Guacamole to 0.9.7 from git
I’ve used an appliance (link below) to setup basic Guacamole setup MySQL auth, but lately a font rendering on HiDPI displays bug has been bugging me more and more. So I’ve decided to upgrade to the git version as there should be a workaround implemented.
Linux: deleted files keeps consuming disk space
Sometimes, usually log files, keeps consuming disk space even after deletion. It’s caused by locks of a process which still keeps using them.
In order to diagnose the problem we have to find those files.
lsof | grep deleted | grep /var/log/apache2 | sort | tail
The output should look something like:
apache2 8728 www-data 79w REG 254,2 23002246 524353 /var/log/apache2/iframes.espoluprace.cz-access. log.1 (deleted) apache2 8728 www-data 80w REG 254,2 5629092 524396 /var/log/apache2/vip.espoluprace.cz-data-access .log.1 (deleted) ... ...
You can see there is process apache2, pid 8728 run by user www-data which holds the files for 79 weeks. The only thing you need to do is to restart the service in this example and the disk space gets freed up.
Hyper-V 2012-R2 – PowerShell commands to remember
I just want to put them all together as I don’t use it on daily basis so it’s quite difficult to hold them in my internal memory (yes, I do mean my brains 😉 ).
How to get back the old System Preferences Energy Saver
I’ve bought a MacBook Pro with Retina Display ( MBP11,1 – 13-inch, Late 2013 ) and after a few days of playing with it Ive discovered the Energy Saver Pane is a little different; most importantly: the Computer Sleep slider is missing. I’ve done some googling and after few hours found out how to get it back.