Editing VirtualBox Installation with Centos 7 (section)

==== Step 10:  Installing ROOT6 ====

I have stored a gzipped tar file of the CERN ROOT software under my home directory on jlabdaq.  You can fetch this file
from JLab with the following commands:

<syntaxhighlight lang="bash">
cd
scp jlabdaquser@jlabdaq.pcs.cnu.edu:/home/brash/root_tarfiles/root6.tar.gz .
</syntaxhighlight>

where jlabdaquser is replaced with your jlabdaq username.  You will need to enter
your jlabdaq password when requested.

The final step involves unpacking and installing this gzipped tar file.

<syntaxhighlight lang="bash">
cd
su
cd /usr/local
tar -xvzf /home/localuser/root6.tar.gz
exit
</syntaxhighlight>

where you would replace "localuser" with your local user account name.  You
will also have to enter the root password (osboxes.org) when prompted after
the su command. NOTE!!! Don't forget to exit superuser mode at the end of
this!!

Finally, you need to add a command to the .bashrc file in your home directory
which sets up the ROOT environment:

<syntaxhighlight lang="bash">
cd
vi .bashrc
</syntaxhighlight>

Add the following line to the bottom of this file, save, and exit.

<syntaxhighlight lang="bash">
source /usr/local/rootbuild/bin/thisroot.sh
</syntaxhighlight>