This is a quick tutorial for EOS.

EOS is an open-source storage software solution to manage multi PB storage for the CERN Large Hadron Collidor LHC. Core of the implementation is the XRootD framework providing a feature-rich remote access protocol.

• Setup your environment: You need to define your default EOS instance (management server),
  e.g.
  • export EOS_MGM_URL=root://eos<experiment>.cern.ch
  • export EOS_MGM_URL=root://eosuser.cern.ch

• EOS Kerberos Ticket
  To access the storage, you need a CERN Kerberos ticket. Create such a ticket with the following command:
  kinit <cern_username>@CERN.CH

• EOS commands are often very similar to Unix (for example ls –> eos ls).
  e.g.
  • eos mkdir /eos/lhcb/user/b/bla/blabla
  • eos ls /eos/lhcb/user/b/bla/blabla

• EOS commands including management server:
  • You don't need to define a default EOS instance, you can add it to the eos command:
    e.g.

eos root://eoslhcb.cern.ch ls -l /eos/lhcb/user/b/bla/blabla