Archives For Howtos


The most popular network protocol analyzer, Wireshark 2.2.5, was finally made into PPA repository more than a week after its release date.

Wireshark 2.2.5 is mainly a bug-fix release. The changes include updated protocol support and the following bug-fixes:

  • Infinite loop: RTMTP dissector, WSP dissector, STANAG 4607 file parser, NetScaler file parser, IAX2 dissector, and NetScaler file parser.
  • Crashes: LDSS dissector, NetScaler file parser, and K12 file parser.
  • Display filter textbox loses focus during live capturing.
  • crashes when saving pcaps, opening pcaps, and exporting specified packets.
  • Dumpcap crashes during rpcap setup.
  • Crash on closing SNMP capture file if snmp credentials are present.
  • And see the release note for more.

How to Install Wireshark 2.2.5 via PPA:

The official stable PPA has built the new release for Ubuntu 16.10, Ubuntu 16.04, Ubuntu 14.04, Ubuntu 12.04 and their derivatives.

1. To add the PPA, open terminal from Unity Dash / App Launcher, or via Ctrl+Alt+T shortcut keys, and then run command:

sudo add-apt-repository ppa:wireshark-dev/stable

Type in your password (no visual feedback due to security reason) when it asks and hit Enter.


2. For those who have a previous release installed, launch Software Updater (or Update Manager) to upgrade it to the latest:

upgrade wireshark

Or run the commands below in terminal to install / upgrade wireshark:

sudo apt-get update

sudo apt-get install wireshark

How to restore:

To restore to the stock version of Wireshark in Ubuntu main repositories, purge the PPA via ppa-purge tool:

sudo apt-get install ppa-purge && sudo ppa-purge ppa:wireshark-dev/stable

Pidgin internet messenger

The Pidgin internet messenger 2.12 was released a few days ago on last Thursday. Here’s how to install it via PPA in Ubuntu 16.04.

After 9 months of development, Pidgin 2.12 brings following changes:

  • Fix an out of bounds memory read in purple_markup_unescape_entity
  • Fix use of uninitialised memory if running non-debug-enabled versions of glib
  • Updated AIM dev and dist ID’s to new ones that were assigned by AOL.
  • TLS certificate verification now uses SHA-256 checksums.
  • Fixed SASL external auth for Freenode.
  • Removed the protocol plugin: MSN, Mxit, MySpaceIM, Yahoo!, Facebook (XMPP)
  • Fixed gnutls certificate validation errors that mainly affected google (Dequis)
  • Replaced instances of with and updated the urls to use https.
  • Fixed issue of messages being silently cut off at 500 characters.

Pidgin  IM 2.12

How to Install Pidgin 2.12 in Ubuntu 16.04, Linux Mint 18

The official Pidgin PPA was dropped years ago. Besides building the new release from source, you can use this third-party PPA

1. Open terminal (Ctrl+Alt+T) and run command to add the PPA:

sudo add-apt-repository ppa:jonathonf/backports


2. Then launch Software Updater and you’ll see Pidgin 2.12 available for upgrade:


Or you can run command to install / upgrade the messenger:

sudo apt update && sudo apt install pidgin

Finally restart your computer to apply changes.

How to Restore:

To restore Pidgin to the stock version (2.10.12) in Ubuntu 16.04, run command to purge the PPA via ppa-pure tool:

sudo apt install ppa-purge && sudo ppa-purge ppa:jonathonf/backports

If you want to keep the Pidgin 2.12 in your system, you may also remove the PPA since it contains various other (low impact) packages, either via Software & Updates -> Other Software tab or by running command:

sudo add-apt-repository --remove ppa:jonathonf/backports


Kapow is a free and open-source punch clock program that works on Linux, Windows, and Mac OS.

Kapow is a punch clock program designed to easily keep track of your hours, whether you’re working on one project or many. Simply clock in and out with the Start/Stop button. If you make a mistake in your hours, you can go back and edit any of the entries by double-clicking on the session in question. Kapow also allows you to easily keep track of the hours since you last billed a client, by providing a helpful “Billed” checkbox—the totals will reflect your work after the last billed session.

Kapow Punch Clock




To install the software in Ubuntu, follow the steps below one by one:

1. Open terminal from Unity Dash or via Ctrl+Alt+T combination key. When it opens, run command to add the developer’s PPA:

sudo add-apt-repository ppa:gottcode/gcppa


Type in your password (no visual feedback for security reason) when it asks and hit Enter.

2. Then you can install the software either via Synaptic Package Manager or by running commands:

sudo apt-get update

sudo apt-get install kapow

For those who don’t want to add the PPA, grab the DEB package from HERE.


To remove Kapow punch clock software, either use Synaptic Package Manager or run the command below in terminal:

sudo apt-get remove kapow && sudo apt-get autoremove

And remove the PPA via System Settings -> Software & Updates -> Other Software tab.


Oracle Virtualbox 5.1.16, a new maintenance release for the 5.1 series, has been released with the most recent Kernel compile fixes.

According to the changelog, Virtualbox 5.1.16 features:

  • Fix general protection fault when running VBox in KVM.
  • Another fix for handling certain MSRs on ancient CPUs without VT-x support for MSR bitmaps
  • Fix errors when restoring a saved state with SMP guests on hosts without the CPUID/HTT bit set
  • Fix a bug in call gate emulation
  • FWAIT instruction fix
  • Fix a sporadic guest hang under certain conditions
  • Hide the mini-toolbar from the taskbar and the pager on certain X11 hosts
  • Better error handling on the global settings / network / host-only / DHCP server settings
  • Fixes for full-screen with multiple screens
  • Host-only Network: fixed host-only adapter creation issue preventing VirtualBox installation on Windows 10 hosts
  • NAT network: fixed two potential crashes in the DHCP server
  • ICH9: fixed incorrect initialization of the primary bus for PCI bridges
  • Storage: LsiLogic fix for Windows 10
  • USB: fixed not being able to attach certain USB devices having invalid characters in the device strings
  • USB: several fixes for the USB/IP support
  • VBoxSVC: fixed another crash during shutdown under rare circumstances
  • VBoxSVC: fixed a stack overflow on Windows debug builds only.
  • OVF: when importing an appliance handle more than 10 network adapters if the OVA was created by VirtualBox
  • OVF: fixes for exporting and importing appliances with many disks
  • VBoxManage: fixed regression with modifyhd –resize
  • rdesktop-vrdp: source code tarball fixes
  • Linux Installers: do not rebuild kernel modules unnecessarily
  • Linux hosts: added an action for opening the VM manager window to the .desktop file
  • Linux hosts / guests: Linux 4.11 compile fixes
  • Linux Additions: added vboxsf FS modules alias
  • Linux Additions: fix for the shared folders kernel module to compile on Linux 4.10
  • Linux Additions: properly install the Linux kernel module override rule on distributions without /etc/depmod.d
  • Windows Additions: fixed a crash with recent Windows 10 builds if 3D is disabled

Download / Install Virtualbox 5.1.16 in Ubuntu / Linux Mint:

For Ubuntu 12.04, Ubuntu 14.04, Ubuntu 16.04, Ubuntu 16.10, and their derivatives, the DEB packages are available for download at the link below:

Virtualbox Linux Download

For those who want to install and receive future updates via VBox Linux repository, do following steps:

1. Open terminal and run command to add the VBox repository:

sudo sh -c 'echo "deb xenial contrib" >> /etc/apt/sources.list.d/virtualbox.list'

Replace xenial in the code via yakkety for Ubuntu 16.10, trusty for Ubuntu 14.04, or precise for Ubuntu 12.04.

2. Then download and install the keys via command:

wget -q -O - | sudo apt-key add -

wget -q -O- | sudo apt-key add -

3. For those who have a previous 5.1 release installed, now launch Software Updater to upgrade it to the latest:

upgrade virtualbox

Or run commands to install virtualbox 5.1:

sudo apt-get update

sudo apt-get install virtualbox-5.1

Deluge BitTorrent Client

The Deluge BitTorrent client 1.3.14 was release one day ago. Users with previous release installed are highly recommended to upgrade to this release.

For WebUI, Deluge 1.3.14 contains a fix for CSRF vulnerability that has the real potential to compromise your machine. For Windows user, the package now includes libtorrent 1.0.11 which should fix crashing on startup.

  • Fixed ‘Too many files open’ errors.
  • Added support for python-geoip for use with libtorrent 1.1.
  • Fixed a single proxy entry being overwritten resulting in no proxy set.
  • Added tracker_status translation to UIs.
  • [GtkUI] Strip whitespace from infohash before checks.
  • Add missed feature autofill infohash entry from clipboard.
  • Backport bind interface option for server.
  • Security: Fixed WebUI CSRF Vulnerability.
  • [Console] Fix decode error comparing non-ascii (str) torrent name.
  • Fixes for splitting magnets from file.
  • Remove duplicate magnet extension when splitting.

How to Install Deluge 1.3.14 in Ubuntu / Linux Mint:

The new release has been made into the official PPA, available for Ubuntu 12.04, Ubuntu 14.04, Ubuntu 16.04, Ubuntu 16.10, Ubuntu 17.04, Linux Mint 13, 17, 18, and their derivatives.

1. To add the PPA, open terminal and run command:

sudo add-apt-repository ppa:deluge-team/ppa

Type in your password (no visual feedback) and hit Enter

Deluge PPA

2. Then upgrade Deluge using Software Updater (Update Manager):

upgrade deluge bittorrent

Or install it for the first time via commands:

sudo apt-get update

sudo apt-get install deluge

How to Restore:

To restore deluge BitTorrent client to the stock version in your Ubuntu main repository, open terminal and run command to purge the PPA:

sudo apt-get install ppa-purge && sudo ppa-purge ppa:deluge-team/ppa