October 19, 2017

Xfce Theme Manager: A Single GUI To Change Any Xfce Theme (With Previews)

This is an old article that I found and sharing.

Xfce uses multiple settings GUIs for setting the window border, controls, icons, mouse cursor theme and so on and it doesn't include any thumbnails. However, if you customize your Xfce desktop frequently, you can use a tool called Xfce Theme Manager which allows you to change the themes from a single GUI and it also includes thumbnails so you can see how the theme looks like before applying it.


Xfce Theme Manager allows settings the following:
  • complete Xfce theme (window border, controls)
  • window borders only
  • controls only
  • icon theme
  • cursor theme
  • change the wallpaper


Also, under "Advanced" (screenshot above), you can adjust various settings like backdrop brightness and saturation, window button layout, window title position, change the fonts and the cursor size.

Other features included in Xfce Theme Manager:
  • customizable theme preview size: you can choose between huge, large, medium and small previews;
  • save the current theme (in case you use the window border from one theme and the controls from another theme for instance) which includes the wallpaper, font and so on;
  • install themes using drag'n'drop (the themes must be tar.gz archives);
  • reset the theme.

I did find one annoyance with Xfce Theme Manager though: when installing new themes, you must click the "Rebuild DB" (rebuild the themes database) under "Advanced" or else the newly installed themes won't show up or at least not immediately.

Here are a few more Xfce Theme Manager screenshots:






Install Xfce Theme Manager in Xubuntu


Xubuntu users can install Xfce Theme Manager from a PPA. The packages in the PPA below require Xfce 4.10, which is available by default in Xubuntu 12.10 and 13.04, but it's not available in Xubuntu 12.04 so for it, you'll also need to add the Xfce 4.10 Xubuntu 12.04 PPA! Alternatively, you can also build it from source (download link at the bottom of the post).

That said, let's add the PPA and install Xfce Theme Manager in Xubuntu:
sudo add-apt-repository ppa:rebuntu16/other-stuff 
sudo apt-get update
sudo apt-get install xfce-theme-manager

Once installed, the application should show up in the Xfce Settings Manager.

If you're not using Xubuntu, you can download Xfce Theme Manager from xfce-look.org.


Source: http://www.webupd8.org/2013/06/xfce-theme-manager-single-gui-to-change.html

October 18, 2017

Ubuntu, Debian, Fedora and elementary OS All Patched Against WPA2 KRACK Bug

Linux Mint, Arch Linux and Solus are also patched.

As you are aware, there's a major WPA2 (Wi-Fi Protected Access II) security vulnerability in the wild, affecting virtually any device or operating system that uses the security protocol, including all GNU/Linux distributions.

Security researcher Mathy Vanhoef was the one to discover the WPA2 bug, which affects the wpa_supplicant and hostapd packages on Linux-based operating systems, allowing a remote attacker to obtain sensitive information like credit card numbers, passwords, usernames, etc. with key reinstallation attacks (a.k.a. KRACK).
This security issues alone is extremely important, and it's been documented over several CVEs, including CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, and CVE-2017-13088. Therefore, you need to update your systems immediately.
Canonical announced a few hours ago that it patched the security issue in the Ubuntu 17.04 (Zesty Zapus), Ubuntu 16.04 LTS (Xenial Xerus), and Ubuntu 14.04 LTS (Trusty Tahr) releases, as well as all official derivatives, including Kubuntu, Xubuntu, Lubuntu, Ubuntu MATE, Ubuntu Budgie, Ubuntu Kylin, and Ubuntu Studio.
In their security notice, Canonical notes the fact that two other security vulnerabilities were patched, both discovered by Imre Rad. The first one (CVE-2016-4476) could allow a remote attacker to cause a denial of service because both wpa_supplicant and hostapd incorrectly handled invalid characters in passphrase parameters.
The second issue (CVE-2016-4477) could allow a local attacker to either execute arbitrary code or cause a denial of service because wpa_supplicant and hostapd incorrectly handled invalid characters in passphrase parameters. These vulnerabilities affect all supported Ubuntu releases.
Debian, Fedora, Arch Linux, Linux Mint, Solus and elementary OS also patched
Of course, the wpa_supplicant and hostapd vulnerabilities mentioned above were also patched upstream, in Debian GNU/Linux, and the maintainers of the Ubuntu-based elementary OS and Linux Mint operating system also announced that they patched the issue, urging users to update their installations as soon as possible.
Fedora, Arch Linux and Solus operating systems have also been patched in the last few hours against the critical WPA2 security vulnerability, so, again, you are urged to update your installations immediately if you're using any of these distributions. Other distros may have updated the wpa_supplicant and hostapd packages too.

Source: http://news.softpedia.com/news/ubuntu-debian-fedora-and-elementary-os-all-patched-against-wpa2-krack-bug-518075.shtml