My Lenovo thinkpad T440s has the next product number:

$ cat /sys/class/dmi/id/product_name

So all the procedures show here are valid for this product

Fist and if you don’t install thinkfan, lm_sensors and hdapsd before:

$ sudo dnf install thinkfan hdapsd lm_sensors
$ sudo sensors-detect
$ sudo sh -c "find /sys/devices -type f -name 'temp*_input' | xargs -I {} echo "hwmon {}" >> /etc/thinkfan.conf"
$ sudo systemctl enable thinkfan

The next step is install tlp and prepare other tools for manage kernel modules:

sudo dnf install tlp tlp-rdw kernel-devel akmods kmodtool

We need to enable external repositories:

$ sudo dnf install$(rpm -E %fedora).noarch.rpm
$ sudo dnf install

Now this is the last part of the installation, but read carefully this warning:

The next instructions are no recommended, we use the --nogpgcheck , so we not only use a external repository, we don’t check the sing the packages.

If you are comfortable with this just:

sudo dnf install akmod-tp_smapi akmod-acpi_call --enablerepo tlp-updates-testing --nogpgcheck

The --enablerepo tlp-updates-testing is necessary for fedora 25+ versions.

Now you can have a very well use and administration of your batteries 🙂

Many thanks to linrunner and the TLP project.

i3wm is a Tiling window manager than has a lot options to custom and low hardware requirements. One most complete guide to i3 in fedora is the amazing Fedora Magazine article “Getting started with the i3 window manager” by William Moreno.

Getting started with the i3 tiling window manager

In my case only want to talk about one custom set of applications than we can use together

sudo dnf install i3 i3status dmenu i3lock feh tmux tilda network-manager-applet

This packages are:

  • i3: Window Manager
  • i3status: Bar of system information
  • dmenu: application launcher
  • i3lock: Screen Locker
  • feh: to set a wallpaper
  • tmux: terminal multiplexer
  • tilda: Customizable Terminal emulator
  • network-manager-applet: Applet to manage network connections

Changing to i3 in GDM:

After configuring the basic of i3, I add the next lines to my .config/i3/config

exec --no-startup-id feh --bg-scale ~/Pictures/fox.jpg # cute wallpaper
exec --no-startup-id nm-applet # network manager applet 
exec --no-startup-id tilda  #tilda terminal emulator


Start tilda for the first time using dmenu $mod + d tilda, and configure as you wish, my particular setup is the next:



and the result:


Oh My Zsh is an AMAZING open source, community-driven framework for managing your zsh configuration.


To use it in fedora, we need install zsh and some user utils to :

$ sudo dnf install zsh util-linux-user git


The next step is just download and run the installation script

$ sh -c "$(wget -O -)"

Once the installation is finished you will be using the brand new oh-my-zsh 🙂


Oh-my-zsh has a lot of useful plugins, they can be activated on ~/.zshrc, By default only the git plugin is enabled, in my personal case, I’m using the next plugins:

  • git
  • python
  • pyenv
  • dnf
  • fedora

Plugins in my ~/.zshrc

the complete list of plugins available are here.


oh-my-zsh has a lot of themes, the examples are here. One of the favorites is the agnoster theme.

Agnoster theme


To configure the themes also need edit ~/.zshrc. I use a random selection of themes

Random themes


Occasionally Oh-my-zsh ask you to check updates (this will be disable on your ~/.zshrc) and if you want do a mauna update just run:



On-my-zsh is not for everyone, so if you want uninstall it just type:


And if you also want uninstall zsh:

$ sudo dnf remove zsh

Special thanks to:

Robby Russell and the people of Planet Argon for the wonderful/amazing/awesome Oh-My-zsh

Telegram is a very amazing messaging application focus in speed and security, Many active contributors in the Fedora project use it for the daily work and fun. basically this motivate me for use it:

Telegram has several features like the next:

  • Free (of charge, no ads)
  • Secure (side-to-side and storage encryption)
  • Open source
  • Have a clear API
  • It is multiplatform
  • Timer for message destruction (very good for dirty chats ( : )
  • and more, please check the official page for more info.

For install it in fedora we have at least three client options:

Official desktop client:

This client is not in the Fedora repos but exists the CORP from Rommon, so we need enable it and install the client:

$ sudo dnf copr enable rommon/telegram
$ sudo dnf install telegram-desktop

Know Issue: The first time telegram is executed it will generate (at least in KDE) a second desktop entry. It can be delete with the menu manager, make sure you delete the right one.


Just like its name says, it is cute 😛

$ sudo dnf install cutegram

CLI Client:

For hardcore, cli geeks

$ sudo dnf install telegram-cli


Reading the always awesome Fedora Magazine, I discovered the Hack Font, just take a look:

this beautiful font is not ready in the fedora official repos but we can install it using the corp repo (Thanks a lot Heliocastro),

We can add the repo and install with dnf as follows:

$ sudo dnf copr enable heliocastro/hack-fonts
$ sudo dnf install hack-fonts

Or simply add the repo and install:

# cat > /etc/yum.repos.d/hack-fonts.repo
name=Copr repo for hack-fonts owned by heliocastro
(Now CTRL+D)
# dnf install hack-fonts

Configure your favorite terminal emulator to use it and enjoy:


Cheers 🙂

Still we have the ugly openssl-1.0.0 dependency in fedora for the cisco packettracer network simulato,

Here the rpm, if you have i686 version or want compile your version (best security and because i don’t provide any warranty) check this post


Fedora Version RPM

I want update this list if necessary or by request


Cisco Packet Tracer 7.0 is created by Cisco SystemsTM and is now provided for free distribution. Self learners are now able to download Cisco Packet Tracer after registering on Cisco Netacad website. A free Packet Tracer 101 (English), a 1-hour self-paced online course is also offered to every registered (free) student to help them get started with PacketTracer 7.0, So you can register and download from here.

The cisco packettracer 7.0 is available for GNU/Linux under the next requirements:

  • nss and ssl libraries.
  • QT4 script-tools, WebKit and QT3 backward support.
  • Cisco NetSpace account. (Mandatory)

We need install some libraries as follows:

$ sudo dnf install zlib-devel ncurses-devel gtk2 glibc glibc-devel \\
 libstdc++ libX11-devel libXrender libXrandr libusb libXtst nss \\
 qt qtwebkit

This time we have x86 (32bits) and x86_64(64bits) Packet Tracer packages, to be sure what is our version, run:

$ uname -m

i686 (32bits)

Still we have the ugly openssl-1.0.0 dependency, so if we have a i686 (32bits) version of Fedora 25:

$ wget
$ sudo rpm -Uvh openssl-lib-compat-1.0.0i-1.fc25.i686.rpm

x86_64 (64bits)

Today most people have a x86_64 machine and this time we have two options for resolve the OpenSSL dependency:

1.- Just download the package generated by me and simply trust me (I call this the ugliest method because i don’t provide any warranty):

$ wget
$ sudo rpm -Uvh openssl-lib-compat-1.0.0i-1.fc25.x86_64.rpm

2.- Compile your own version (I call the “just ugly” method because you can check the source):

First get the code:

$ wget
$ sudo dnf install @development-tools fedora-packager krb5-devel
$ sudo rpm -Uvh openssl-1.0.0i-1.fc17.src.rpm

For the build process we need super user access:

$ su -
# cd rpmbuild/SPECS/
# wget
# rpmbuild -bb openssl-lib-compat-1.0.0.spec
# rpm -i ../RPMS/x86_64/openssl-lib-compat-1.0.0i-1.fc25.x86_64.rpm
# exit

So many thanks to Yves L’ECUYER owner of, the original spec and the example are all from him.

Cisco Packet Tracer 7.0 will be downloaded from Cisco Networking Academy Portal,

$ tar -xzf PacketTracer70_linux.tar.gz && cd PacketTracer70
$ chmod +x install
$ sudo ./install

After accept the EULA, the installation begins, we need set the environment variables with the next command:

$ sudo /opt/pt/

Graphical Launcher on Gnome

At this point packettracer is ready to use but another useful thing to do is create a desktop Cisco Packet Tracer icon to launch it, first download the icon:

$ wget
$ sudo mv Cisco_Packet_Tracer_Icon.png /usr/share/icons/

With our favorite plain text editor we will create the file /usr/share/applications/packettracer.desktop as follows:

[Desktop Entry]
Name= PacketTracer 7.0 Comment=Networking Cisco GenericName=Cisco PacketTracer 7 Type=Application Exec=/opt/pt/packettracer Icon=/usr/share/icons/Cisco_Packet_Tracer_Icon.png Categories=Education; StartupNotify=true

Now we will run Cisco Packet Tracer 7.0 from our Desktop: