Sometimes you just want to query a remote ntp server (and maybe see the difference between the two clocks). In this case you can use the tool sntp. From the sntp man page: The default is to write the estimated correct local date and time (i.e. not UTC) to the standard output…. use something like: $ sntp at.pool.ntp.org 2018-04-19 11:36:26.538479 (-0100) -0.004752 +/- 0.023788 at.pool.ntp.org 86.59.28.10 s2 no-leap

I know I know, there are plenty of openssl cheat sheets out there already (1 or 2). But as I keep using googling it again and again to find the most useful openssl commands I decided to do my own – the first version of the blog entries is already 3 years old actually. Another reason for creating the list is that I remember things better when I am writing the down.

How to disable persistent network interface names in Debian 9 (Stretch) edit /etc/default/grub and change the following line GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0" afterwards run update-grub

Viewing a “raw” diff in Github is easy – if you know how. If you are viewing a commit on github the URL looks something like this: https://github.com/voxpupuli/puppet-php/commit/50e1c1733a931dd3d9d21db8a4f584c9984100d1 Adding “.diff” to the URL will generate the raw diff for you which you can pipe to patch etc. The full URL is: https://github.com/voxpupuli/puppet-php/commit/50e1c1733a931dd3d9d21db8a4f584c9984100d1.diff