[PLUG] RESOLVED: bash and awk strangeness

[Daniel Herrington]

On Tue, Jan 27, 2015 at 10:25 AM, Daniel Herrington <herda05 at gmail.com>
wrote:

>
>
> On Tue, Jan 27, 2015 at 10:15 AM, Rich Shepard <rshepard at appl-ecosys.com>
> wrote:
>
>> On Tue, 27 Jan 2015, Daniel Herrington wrote:
>>
>> >      host=$(awk '{ print "wtf:" $m }')
>>
>> Daniel,
>>
>>    Your awk statement begins by printing the string, wtf: and that is why
>> you
>> see that in the output.
>>
>>    As Paul wrote, show us the input file and we can examine the output
>> relative to it.
>>
>> Regards,
>>
>> Rich
>> _______________________________________________
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>>
>
> The file:
> foo
> bar
> baz
> bunt
>
> awk seems to be able to read bar in the file before the echo "before
> testing:" statement(line 8). Actually, it clearly has to, I just don't
> understand why:
>
> Starting script
> before testing: foo
> foo :: wtf:bar
> wtf:baz
> wtf:bunt
>
> The code for "before testing: should be read for each run of the for loop,
> and should occur before the awk gets called. If I comment out the awk line,
> I get the loop behavior I would expect. In fact, I think the for loop is
> actually superflous, as the while itself should just loop.
>
> Also:
>
> SunOS svanyc587 5.10 Generic_150400-13 sun4v sparc sun4v
>
> --
> Daniel B. Herrington
>

Ok, it has something to do with the way I'm passing in the variable to awk.
The original statement:

host=$(awk '{ print "wtf:" $m }')

works when I do:

host=$( echo $m | awk '{ print "wtf:" $1 }')

The way I'm calling awk is the issue. It also seems it would be better to
just call awk against the file directly.

thanks all,

-- 
Daniel B. Herrington