[PATCH] BBB: sd_setup.sh: Change /bin/bash -> /bin/sh to solely adhere to POSIX shell constructs

[Ed Sutter]

For my system, with bash the "echo -e" is fine, but with sh, it chokes...

    els:ps
       PID TTY          TIME CMD
      3938 pts/24   00:00:00 bash
      3988 pts/24   00:00:00 ps
    els:echo "hello\n1\n2\n3\n"
    hello\n1\n2\n3\n
    els:echo -e "hello\n1\n2\n3\n"
    hello
    1
    2
    3

    els:exec /bin/sh
    els:ps
       PID TTY          TIME CMD
      3938 pts/24   00:00:00 sh
      3991 pts/24   00:00:00 ps
    els:echo "hello\n1\n2\n3\n"
    hello
    1
    2
    3

    els:echo -e "hello\n1\n2\n3\n"
    -e hello
    1
    2
    3

    els:

Just noticed one other thing:

    els:ls -l /bin/sh
    lrwxrwxrwx 1 root root 4 Feb 19  2014 /bin/sh -> dash
    els:ls -l /bin/bash
    -rwxr-xr-x 1 root root 986672 Oct  7  2014 /bin/bash


If you guys think my system is in a strange state; hence, I'm causing this
confusion, I'll just commit it as is.
Ed
> Hi Dr. Joel,
>
> On Sat, Jul 11, 2015 at 8:19 AM, Joel Sherrill
> <joel.sherrill at oarcorp.com> wrote:
>>
>> On July 11, 2015 10:06:09 AM CDT, Jarielle Catbagan <jcatbagan93 at gmail.com> wrote:
>>> Ed,
>>>
>>> Is there any indication as to why 'echo' is failing?  'echo' is not a
>>> built-in command for either shell interpreter as I was able to locate
>>> it as a separate program using both shells.  The -e option is to allow
>>> interpretation of backslash characters as I was using it for newlines
>>> and tabs.
>> Do  sh -x and then try the command by hand at a prompt.
>>
> Using sh -x, I issued
>
>          echo -e "test\t123"
>
> and it outputted
>
>          + echo -e 'test\t123'
>          test        123
>
>>> On Sat, Jul 11, 2015 at 7:51 AM, Jarielle Catbagan
>>> <jcatbagan93 at gmail.com> wrote:
>>>> On Jul 11, 2015 7:17 AM, "Ed Sutter" <edsutterjr at gmail.com> wrote:
>>>>> Jarielle,
>>>>> Did you try running the script with that change?
>>>>> I applied the patch, then tried running it and it failed.
>>>>> Apparently 'echo' in sh is different than 'echo' in bash, at least
>>> it is
>>>>> for my system.
>>>>> Let me know.
>>>>> I had to remove the -e from the echo lines for it to work on my
>>>>> ubuntu14.04 system.
>>>>> You wanna test that and resubmit the patch or should I do it?
>>>>> Ed
>>>>>
>>>> Hi Ed,
>>>>
>>>> After I changed it to 'sh' I was able to run it.  Ok, I'll look into
>>> it to
>>>> see what the issue might be.
>>>> _______________________________________________
>>>>> umon-devel mailing list
>>>>> umon-devel at rtems.org
>>>>> http://lists.rtems.org/mailman/listinfo/umon-devel
>>> _______________________________________________
>>> umon-devel mailing list
>>> umon-devel at rtems.org
>>> http://lists.rtems.org/mailman/listinfo/umon-devel
>> --joel

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