Command behaviour is different via direct root login versus su

Solution Unverified - Updated -


  • A direct log in to the server as root behaves differently than log in to server as non root (test account) and then do a su - root or su -.
  • When a user logs in as non root and does a su - root into RHEL server and executes below command then command hangs and the process shows using up close to 100% CPU.
   od -x < /dev/urandom | head -10
  • While login as root directly and execute the same command it works.
  od -x < /dev/urandom | head -10


  • Red Hat Enterprise Linux 6.4

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