1. Search on the internet
2. Bash and the command line
in one place
As for me+ME: It is as was, i.e. I am still not well for not having
slept enough because of
with my eyes. If my eyes and my energy
are up to it there will be another
Nederlog today on another subject - intellectuals, of all
things (probably) - but I make no promises.
The present Nederlog is about what the
title says: Useful
where it should be understood that I am still on Ubuntu 12.04 LTS, and
probably will be in the foreseeable future, because with my bad eyes
I need the High Contrast Inverse option that is on Ubuntu, that
switches black and
white in menus.
Also , I like it a lot
better than MS Windows and regret I have not switched
sooner - but there is much to learn, though that is mostly a matter of
choice, since Ubuntu can be used by quite naive users without problems.
I n any case, for those who
want to know more about Linux, here are a
things I found useful.
This sounds obvious, but it generally
works, in my experience, at
least in the sense that I usually found
more about a topic than
I wanted to read, and that also I usually found some
sort of relatively clear answer fast.
with Linux like me, this option arises - for example -
once you start
looking in the innards of Linux, e.g. when using top
(alternatively, with a graphical interface) htop, that
shows one what is running at the moment
on one's computer: Lots of things, but then one should like to find
what these thingies are and do and whence
they come from.
I usu ally got a
helpful answer fast, and often more than I wanted or
needed to read to get some basic understanding.
2. Bash and
the command line
the Bourne Again Shell, which is - so to speak, for Windows users
(and I know I am hugely simplifying) -
the DOS for Linux, except that it is a lot more
powerful and useful. It
also can be programmed, and there are lots of commands, many with lots
of options, that allow one to do much
more than one can do on Windows.
The re are
quite a few shorter and longer introductions
to Bash (which is one of several
shells for Linux, but almost certainly the most widely used, at the
writing), not all of them as clear as one should like
them to be.
The best one I found so far can be found here:
This is by William Shotts Jr.
and the link is to a html-version of it, where you also can
find a quite useful
and clear tutorial about shell scripting
(programming Bash), and a pdf version
of a large book of the same title, that you can also
buy on paper, from No Starch Press. I did not do so, but I do have
about programming from the same publisher,
and these were both well done and well made.
In any case: This is quite helpful, quite clear and well written. 
Useful information in one place
also finds when searching the internet for
a specific topic -
in general, not just about Linux - is lots of information
on one aspect of the topic that is not very useful, and
often also not really informed nor well written.
What one should
like is lots of information on one site, written by a specialist, who
how to write tolerably clear English.
Here are several such places -
and yes: I know there are the man
pages in the Bash shell
- type man command, for any command, and you get lots of info,
but I like to have it a bit
better formatted, in a web browser:
This is originally
by Binh Nguyen, currently
on About.com, with very many terms. I found it very useful.
Since Bash (or some
is the fundament of the Linux I use and
sine there is an enormous amount of useful things it can do, one would
like to have an overview.
Here is a good one:
The first is on ss64.com,
where there is more useful stuff about other subjects, including the
Windows Command Line (for those wedded to Windows). I found this very
useful and well done: You get a
long list of commands with short explanations, and a link
to more extensive explanations and options. Tthe
second, is on oreilly.com,
from a book I haven'ŝ read - Linux in nutshell
(of 944 pages) -
but to which applies the same, and o'reilly's version lists 687
I s aved what seems to be the
best reference for the last:
The reason it is last and I
"seems" is that I only found it today,
and there is a huge amount of
information there, but what I read was very well done and
a pleasure to read. 
Anyway... so far for Linux
 As it happens - not only on Linux - only a small
percentage of the texts that relate to programming and tech stuff is
well written, which is a great pity. (It seems as if most who are good
at mathematical stuff are not very good at writing, and most who can
write well have no head for maths. There are exceptions, such as -
outside computing - Poincaré
(that I prefer
to call M.E.: The "/CFS" is added to facilitate search machines) which
is a disease I have since 1.1.1979: