[scenario 4] 2> redirection is not working

[pierrepo]

This example does not work:

grep foo /shared/data/bank/homo_sapiens 2> error.log

The error.log is created but is empty. The error message is printed in the terminal:

$ grep foo /shared/data/bank/homo_sapiens 2> error.log
(null): /shared/data/bank/homo_sapiens: Is a directory