title: Execution "df" command on AIX with the bash
body: <p>it's very strange that when I am executing df command on AIX with bash like  bash -c "df /" I suppose it will be executed like on Linux, but still the result is same like korn shell. Please give me explanation to this. How can I somehow to be sure that df command output will be same on AIX and on Linux. Before my solution was installing bash on AIX. Now I cannot find any option beside rewrite new script for AIX</p>