command 'who am i' can not get the result, but do it in SecureCRT can get the result

[jesse1993]

Environment info

gradle-ssh-plugin-2.7.0 (groovy-ssh-2.7.0, jsch-0.1.53, groovy-2.4.11, java-1.8.0_121)

Linux version 2.6.32-431.el6.x86_64 (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Fri Nov 22 03:15:09 UTC 2013

Steps to reproduce

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