How to merge Apache access logs and sort them by date
Friday, 23 June 2017Just dropping this here:
https://gist.github.com/Cybso/77b8f7bdec78e0a8df8f8435e3ccb8fc
# Sorts the rows of one or multiple apache access_log files
Put a stamp on the last page of a PDF document
Monday, 3 April 2017PDFTK, the swiss-knife pdf toolkit, can be used to put a stamp an all pages of a pdf file; but it is not possible to put the stamp on the last page only. There is a commercial tool "stamptk" available for this. But you can also workaround this with a few lines of shell code:
Program Arduino Pro Mini with CP2102 USB module
Friday, 24 March 2017When I ordered a bunch of Arduino Pro Mini clones I didn't notice that these don't come with an integrated USB-to-Serial adapter (in fact I needed Arduino Nano - well, I was relative new into this).
So to get a change to use them I've also ordered a CP2102 board that converts between USB and TTL. Since it took a while for me to figure out how to use that I will document it here.
First, connect the CP2102 with the Arduino:
KDE: Remove "Switch User" and "Start New Session" from Plasma's lockscreen
Monday, 13 March 2017If you are the only user on your workstation you probably do not have any need for the "Start New Session" button on Plasma's lockscreen. Quite the contrary it's extremly anoying if you just wanted to unlock your session and accidentally created a new one instead.
These is no UI switch to disable this button but you can use the KDE Action Restrictions for this. Just append the following lines to your "$HOME/.config/kdeglobals" (or "$HOME/.kde/share/config/kdeglobals") and login again:
[KDE Action Restrictions][$i]
action/switch_user=false
action/start_new_session=false
How to wake on lan a remote host on demand using systemd's sockets
Tuesday, 7 February 2017Some years ago I wrote an article on how to wake on lan a (SSHFS) fileserver on demand using autofs.
Today I want to describe a more generic way to do the same. This should not only work for SSH but for every services that communicates via TCP. Everything you need is systemd, netcat (nc) and a wake-on-lan tool like etherwake.