Stop running away from this, request and assign an IPv6 address to an external interface to make content available over both IPv4 and IPv6.
Today, I will create a simple proof of concept shell script to diplay message provided from standard input or as an parameter, so it could be used as a template to write shell scripts that can be executed in a pipe or as standalone application.
Two years ago I have described a simple way to display established TCP connections using ss command. Today I will use lsof and gawk to pretty print network connections.
Perform test whether a number is a prime using command-line factor utility.
Build your first VServer on Debian Wheezy using psand.net public repository.
It is a matter of personal preference whether you use current or former network device naming convention. I am more accustomed to the latter and will configure operating system to retain the old behavior.
lxd is a real pleasure to use, but mdadm constantly segmentation faults inside Ubuntu guest operating system. This issue affects only Ubuntu as mdadm is not disabled by default inside these containers. It is nothing scary or dangerous, but in this specific case, repetitive segfaults needlessly raise alertness level.
It is very common to display and store command output using tee utility, but taking full advantage of it requires applying slightly different error catching strategy.
ifconfig is not installed by default in Debian Stretch. However, it is available in package repositoriy, so applications that depends on it can still be used.