The Linux Page

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Wordpress 2017 -- how do you get a summary in your Category and other lists?

I now also work on a Worpress website with theme 2017 (twentyseventeen) and I noticed that when I go to the Caegories or some other list of posts, I get the full posts.

Looking into it, I could not really see anything about it on the Internet. Strange.

The fact is that all you have to do is go back to each post (yeah, a tad bit tedious if you have hundreds already) and add the "Read more mark". The fact is that Wordpress does not seem to automatically add a feature to automatically calculte the summary of your posts. Maybe I missed it or I would need to install yet another plugin.. ...

Increasing the volume over 100% on Linux

I have been listening to many videos on YouTube, Facebook, etc. that have a really low volume. This is generally rather annoying since in the end I cannot hear a lot of the audio track.

There is actually a way to increase the volume over the normal 100% limit.

There are several features that offer such a feature, but the one that worked for me is a Volume Control application called pavucontrol.

sudo apt-get install pavucontrol
pavucontrol

It looks like various systems offer various ways to do that, but at least that one works for me under Linux in Ubuntu Unity.

Source: ...

Thunderbird is so slow... it's nearly unusable!?

I have been using Thunderbird for a long time and yet I still did not know about the Compact feature.

A while back, i would use my Local Folders to save Junk, Draft, and Sent emails. This is really fast by default. But at some point I had a problem and reverted to using the remote folders which worked.

The problem was that Thunderbird would tell me that my Local Folders were full even though looking at them they were clearly empty.

The way this works is really annoyingly bad:

1. it accepts emails in a file, like the good old days, it uses one file for any number of emails

2. it adds new ...

Writing a Shell Script from cmake

In cmake, you have a cool feature which allows you to create a file.

First you use a WRITE, then you use the APPEND to add more lines to the file.

That file may be a shell script, though. In that case, you run in a problem whenever you want to write a variable which uses the curly brackets (as in ${TEST}), because cmake sees those as its own variables.

There is an example of script that we use in our Snap! development.

file( WRITE  ${lint_script} "#!${BASH}\n"                                                            )
file( APPEND ${lint_script} "if test \${3##*.} = ...

Setting tag attributes in a dynamic way in XSLT with XQuery

I wanted to dynamically manage the attributes of the HTML tag. As I'm working on the Snap! C++ system, I thought that should be done with the standard XSLT feature: <xsl:attribute-set name="...">. Unfortunately the the XQuery implementation does not currently support such, at all.

There is a way, though, to still make it work with a central template definition which can be used to decide what should be and what should not be added to the HTML tag.  Especially, in this way we can make use of one template that is a system defined template. This being said, if you use ...

MS-Access query sort not working

Looked around on how to sort out a report properly as it was sorting on the wrong field (actually at first it did not even look like it was sorted at all, but I did not notice that other field was indeed sorted!)

The sort in a Query Report form (opposed to just an SQL query) is defined by the Group & Sort feature and not the SQL results. Actually, you most certainly don't need it in the SQL because otherwise you'll be sorting twice.

It took me a while, but I'm glad I found the solution. All the documentation I searched only talked about the wrong methods: use the Query sort ...

Distributed compilation with Linux C++

I really want to try that feature! I have been using Incredibuild on MS-Windows and it can make a software compile 5 to 6 times faster. (i.e a software normally compiling in 1h compiles in 10 minutes!)

Under Linux some people worked on the C compiler front end to move the process to other machines as required. This is called distcc (i.e instead of using cc to compile, now you use distcc). This front end has a list of all the C compiler machines and uses them whenever possible.)

From what I can see on the front page, the setup should be a breeze (yeah... I know) and it does not even require ...

Designing a rotating wheel to ask users to wait while working in the background

Large version of the waiting wheelAs I'm working on a new feature for our Snap! Website system I wanted to have a turning wheel that asks users to wait while the computer does work.

The graphic is very simple: a rectangle with a border and a background color that rotates. However, I do not have a tool (that I know of) which could create the graphics automatically. So I did it with quite a bit of manual labor, but it was fun to learn a few things along the way.

I use inkscape to create such graphics. First I created the rectangle on the left. With that I had to have it rotated going 360 degrees repeating the rectangle 24 ...

Just installed a PECL extension and Apache still doesn't understand it?!

Last night as I was compiling a new PECL extension for an install, after a while it worked... I could run php -v and it would give me the version of the PHP modules without telling me that the it couldn't load the extension (i.e. we already had the extension=http; in the php.ini file.)

But when testing with php -v on the command line, it would reload the php.ini and apply the extension feature and such.

However, when testing with Apache, it was still not working. The PECL installation was all correct, so why would it not see the resulting extensions?!

Because you need to restart Apache. ...

Ignoring .svn, CVS, *~, .o, ... in bash auto-complete

Ever wondered whether you could ask bash auto-complete to ignore some of your files?

You can with the FIGNORE feature and the bind feature:

export FIGNORE=CVS:\~:.o:.svn
bind 'set match-hidden-files off'

You had one or both of these lines to your .bashrc file and then the .svn and CVS folders won't be used anymore! Add all the extensions you don't like in there and you'll feel better soon!

Note: The \ in front of ~ is to avoid the bash expansion of that character.

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