Hi
Could anyone please specify how I should install libreoffice on the above operating system.
I tried apt-get libreoffice without success
Thank you very much
Here you should ask questions about LibreOffice, not Debian or any other GNU/Linux distribution or operating system for that matter. Seek for forums and documentation about how install software on GNU/Linux.
Nevertheless, try apt-get install libreoffice (you’ve missed ‘install’).
Debian 8 is oldstable, Debian 9 is new stable. Consider upgrading your operating system, or download newer LibreOffice from LibreOffice’s web site instead of installing version that’s in Wheezy.