Fedora tips

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publication date 2022/08/01

Tools for packages management

command line:
dnf (like apt)
rpm (like dpkg)

graphical interface:
dnfdragora (like synaptic)

dnfdragora is not starting

Normally this happens afer a system upgrade or after changing/visualizing "User preferences" or "Information" in dnfdragora. To solve this problem the following command need to be passed to the command line

rm /root/.config/dnfdragora.yaml
killall dnfdragora-updater
killall dnfdaemon-system
dnfdragora-updater &

Usefuls rpm repositories to fill the lack of packages in Fedora

https://rpmsphere.github.io/
https://dl.google.com/linux/chrome/rpm/stable/x86_64
http://dl.google.com/linux/earth/rpm/stable/x86_64
https://packages.microsoft.com/yumrepos/edge/
https://packages.microsoft.com/yumrepos/ms-teams
https://rpm.opera.com/rpm

improving gnome3 for non brain dead people

dnf install -y gnome-extensions-app gnome-tweaks gnome-shell-extension-appindicator

ncurses GUI for activate/deactivate services

ntsysv

dealing with small RAM size and tmpfs

Fedora has by default the annoying setup of disabling /tmp directory and putting its contents in RAM using tmpfs.

In system with small amount of RAM (typically below 16 Gb) this setup cause a lot of problems due to the RAM voracity of most of the actual programs.

It is also quite complex to solve this issue withouth a fresh reinstall of the system. If you cannot install a good distro like Debian, you can start increasing the size of tmpfs withouth reboot:

mount -o remount,size=16G,noatime /tmp

You can check the configuration of oomd, and increase the limits:

systemd-analyze cat-config systemd/oomd.conf

If you was hable to activate an alternative swap partition you can mask tmpfs

systemctl mask tmp.mount

If you cannot change anything of the above, the last resource is to redefine in the .bashrc all the XDG variables that points to /tmp to another physical directory in which your user has access, like this:

export TMPDIR=/work/tmp
export TMP=/work/tmp
export TEMP=/work/tmp
export XDG_CACHE_HOME=/work/tmp
export XDG_DOWNLOAD_DIR=/work/tmp

The relevant documentation is here:
tmp on tmpfs
masking /tmp
oomd

Upgrade Fedora

How to upgrade Fedora in the correct way

XFCE4 configuration

Change Xfce4 themes withouth experiencing disruption with GTK3

dnf install xfce-theme-manager

If you want to fix the screen resolution, edit this file

.config/xfce4/xfconf/xfce-perchannel-xml/displays.xml

and make it read only. (tips from here)

Useful alias in .bashrc

alias md='mkdir'
alias ls='ls -F --color'
alias lt='ls -ltr'
alias la='ls -la'
alias dnf-search='dnf search --all'
alias dnf-who='dnf provides'
alias dnf-info='dnf info'
alias dnf-content='dnf repoquery -l'

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