AFS

To be able to access your homedir on /afs/cern.ch/user/... :

$ /usr/kerberos/bin/kinit -4 <afsusername>
$ /usr/kerberos/bin/kinit -5 <afsusername>
$ aklog -cell cern.ch

Be careful: just using '$ kinit' might call the wrong Kerberos version (check with which kinit).