Install and running root

[sarah]

Hello everyone

although root is installed i can’t open it
thanks in advance.

[dastudillo]

How exactly did you install ROOT? If you get a precompiled binary (and you should, unless you have a reason to compile your own), make sure it is the one for your specific linux (if it’s Ubuntu, get the ROOT for the specific version of Ubuntu – 18,20,22–, or whatever the case).
And did you install all required packages (check the dependencies page; I guess you are on Ubuntu)? Before installing these, on Ubuntu I always install “build-essential” first to be safe; I think it already comes pre-installed on recent Ubuntus, but try to install it if not sure.

[ferhue]

See also Unable to locate package libtinfo6 - #6 by eguiraud

[sarah]

now that i upgraded Ubuntu from version 18 to 22 and tried to open it … that’s the result

[ferhue]

check the Dependencies - ROOT, maybe you need to apt install libssl-dev

Or download the new binary for Ubuntu 22: Release 62806 - ROOT

If you have another libssl version, you can do a dirty hack with a symbolic link.

[sarah]

here i’m trying to install rootv6.28.06

[ferhue]

Do you need to install it? Can’t you just download the binary executable?

https://root.cern/download/root_v6.28.06.Linux-ubuntu22-x86_64-gcc11.4.tar.gz

[sarah]

please would you explain more to me ?

[ferhue]

Unzip the file I linked. Open a terminal and write:
source root/bin/thisroot.sh
root -l

The first line you can add to your .bashrc if in the future you do not want to call it explicitly.