Ubuntu :Installing Geogebra

I tried to install GeoGebra using flatpak.Just for

experiement i installed flatpak using apt

I was greeted with follwoing error when i run command to install geogebra.

Error:

sangram@sangram-Inspiron-14-5430:~$ flatpak install flathub org.geogebra.GeoGebra

Note that the directories

'/var/lib/flatpak/exports/share'

'/home/sangram/.local/share/flatpak/exports/share'

are not in the search path set by the XDG_DATA_DIRS environment variable, so

applications installed by Flatpak may not appear on your desktop until the

session is restarted.

Looking for matches…

error: No remote refs found for ‘flathub’

Solution:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

Open bashrc file:

sudo nano ~/.bashrc

Add following line into it

export XDG_DATA_DIRS=$XDG_DATA_DIRS:/var/lib/flatpak/exports/share:/home/$USER/.local/share/flatpak/exports/share

Reload bashrc

source ~/.bashrc

verify that the Flathub remote was successfully added by listing Flatpak remotes:

flatpak remotes

Output:

Name Options

flathub system

Now I was able to install using following command

flatpak install flathub org.geogebra.GeoGebra

To launch it run

flatpak run org.geogebra.GeoGebra

If you want to remove this app then run

flatpak uninstall flathub org.geogebra.GeoGebra

Confirm it is deleted by seeing list of installed app

flatpak list

Ubuntu:.Recover corrupt bashrc

Somehome you messed with .bashrc file & it

start mulfunctioning then you can just backup

and replace it with its working copy.

Usually .bashrc file located in /home/username (sangram is my username).

cd /home/sangram

Backup

cp .bashrc .bashrc_backup

Delete

rm -rf bashrc

First Way:

Now go for https://gist.github.com/marioBonales/1637696

which has default Ubuntu Bashrc file content.copy its

content and do

nano .bashrc

Then add copied content to it.Then

source .bashrc

Second Way:

copy the content of /etc/skel/.bashrc

and paste it into empty .bashrc

Now

source .bashrc