Hello Experts,
I was able to figure this out after spending time reading the Python help docs.
This is what I went about doing:
> reecalc = [s.split() for s in os.Popen("free -ht").read().splitlines()]
> freecalc_total = freecalc[4]
> freecalc_total = freecalc_total[3]
> freecalc_total = freecalc_total.translate(None, 'M’)
tmp = "%s" % freecalc_total
command = "stressapptest -M %s -s 20" % tmp
p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE,
stderr=subprocess.PIPE).communicate()[0]
…
…
...
Please let me know if this is the optimal method to achieve in order to pass
the assignment value to shell. I am open to suggestions or a better way of
implementation/logic.
Thanks again
Satish
On May 28, 2014, at 1:16 PM, Satish Muthali <satish.muth...@gmail.com> wrote:
> Hello Experts,
>
> I am trying to extract the available userspace+swap memory and then want to
> feed this value as an argument to a tool that is executed in the shell.
>
> so, this is what I have so far:
>
> reecalc = [s.split() for s in os.Popen("free -ht").read().splitlines()]
> freecalc_total = freecalc[4]
> freecalc_total = freecalc_total[3]
> freecalc_total = freecalc_total.translate(None, 'M’)
>
> Now I want to feed the value for ‘freecalc_total’ as an argument to a command
> executed by the shell.
>
> For example:
>
> devnull = open(os.devnull, “w”)
> runCommand = subprocess.call([“stressapptest”, “<I want to pass the value of
> freecalc_total here>”, “20”],stdout=devnull,stderr=subprocess.STDOUT)
> devnull.close()
>
> How do I go about doing this?
>
> Many thanks in advance
>
> -Satish
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