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Attacks by ZmEu or w00tw00t robots

Who is ZmEu?

An image showing ZmeuThe name Zmeu (no capital E) is the name of a fantastic creature of Romania. There are so many stories that there isn't a clear understanding of what it is... but it is human like, can spit fire and wants to marry young women.

If you're wondering, it is generally a bad guy.

ZmEu Attack

Today, I noticed a lot of traffic on one of my servers. Looking into what was happening, I immediately found out that an attacker was looking for a loophole in that system. That attack was being performed from China.

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 ...

Update to Ubuntu 14.04, huge problems with the display!

Oka, so today I finally got the chance to upgrade to Ubuntu 14.04, hopefully soon to 14.10 too.

I have to say that in general, it looks like they've done a good job as things seem to work better...

However, the display setup got lost. My HP 2509m monitor is connected through a KVM and because of that, it does not always work as expected. That is, the nVidia card does not get to read the monitor information. It took me a while, but I found a way to fix the problem.

First of all I connected the monitor directly to my computer. That gave me the ability to change the resolution to 1920x1080 ...

Adding a group for to a logged in Linux user

Once in a while I want to add my user to a group and then right away make use of that group.

Unfortunately, in general Unix kind of forces you to re-log in for the new group to be attached to your account.

However, a command has been added, a while back, to do just that on the fly. Not something you would want to use in a script, but at least, it works for me when doing a few things here and there.

In my case, I wanted to run QEMU, which I hadn't done in a while, and the system told me that it could not open the KVM, the error: kvm permission denied.

The problem was that I was not part ...

Installing / Upgrading SugarCRM

Preparations after unzip

Installing SugarCRM is generally easy, but if you don't want to just make everything writable by Apache, you may find it tricky, especially if you have problems setting up the system.

First of all, you want to get the code from SourceForget.net and extract it in the root directory of the website where you want to use it. I prefer to dedicate a sub-domain name such as crm.m2osw.com to make use of SugarCRM. That way I don't have to deal with other weird things of using this under a sub-directory.

Once in there, the user and group should be a user other than ...

Bad move for PHP unpack()! So unpack() stopped working?

Today I noticed many errors on one of my websites. Looking closer into it, I noticed that the code for the mo_references Drupal module stopped working.

It took me some time, especially because the code seemed to work just fine as all the files could easily be displayed.

Actually, that was not the case. The unpack() character 'a', which I used, was transformed from a simple string that gets trimmed, to all the characters, including the NULL characters. Ouch! Now we have to use the 'Z' character instead.

I use it to unpack() a tar file by loading 512 bytes of data in a ...

My JavaScript code does not get the correct widget size, why?

As I am developing a set of pages for a customer, I ran in an intersting problem: my JavaScript function could not properly define the sizes of a box.

That box is heavily tweaked with the CSS assigned to it, as well as all of its neighbors. So I thought that may have something to do with it.

What I hadn't realized so far is that the ready() function of jQuery() is called once the script that includes it is ready (as in loaded) and not once the document as a whole is ready (done loading, i.e. onload event.)

With that knowledge it was easy to understand that I was actually finding myself ...

SANE cannot find any scanners

As I upgrade to 13.10 of Ubuntu, I'm having to do work to get my system back to normal...

Today I stumble on the fact that USB ports are now not accessible by everyone by default. So when I tried to scan a document, it told me that I had no scanner. Panic... and then I found out that the permissions were changed, widely, so only users who are root (by default) can access the scanner.

I changed the group to a group I'm in and it worked without having to reboot or relog in. However, it is not unlikely that the group won't stick... TBD!

To find the USB port that has your scanner, ...

Using non-default private key for Launchpad

As I was looking around for the way to specify the correct key for launchpad, I could not find it. Luckily the ssh process is running when it asks for the passphrase so I could see the URL used to access the launchpad server from Bazaar. It is:

bazaar.launchpad.net

The address is not visible by default because you use the lp: protocol instead of a full URI to access launchpad.

  Host bazaar.launchpad.net
    HostName bazaar.launchpad.net
    User <your launchpad username>
    PasswordAuthentication no
    HostbasedAuthentication no
    IdentitiesOnly yes
    IdentityFile ...

Readonly content cannot be changed. Libreoffice preventing edits...

Today I opened a document where I had to make a few edits and LibreOffice decided to tell me:

Readonly content cannot be changed.
No modifications will be accepted.

There is a screenshot of that message:

Error message: Readonly content cannot be changed. No modifications will be accepted.

The error may be justified, I do not know, but apparently not too many people know how to unlock a document. I found pages and pages that tell people to check the read/write protection of the file, as if a read-only file on disk could not be updated in the editor... (yes! you cannot write it back, but you can edit it and do a Save As ...)

One person, though, had the correct answer to ...

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