Im trying to get a linux binary to send its standard output to a variable by using subprocess. But just keep getting tracebacks.
>>> import subprocess
>>>nmap -sn -Pn todd.ns.cloudflare.com --script dns-check-zone --script-args='dns-check-zone.domain=www.macmonster.com
Any Ideas (oh and Im using Python2.7).
Ideally I would like to avoid using Shell=true to avoid any security concerns.
Thanks,
The module shlex will take a string containing the whole shell command and split it up exactly how Popen and check_output expect it. Like this:
import shlex, subprocess
cmd = "/usr/bin/nmap -sn -Pn todd.ns.cloudflare.com --script dns-check-zone --script-args='dns-check-zone.domain=www.macmonster.com'"
args = shlex.split(cmd)
output = subprocess.check_output(args)
When you look at contents of args you'll see:
>>> print args
['/usr/bin/nmap', '-sn', '-Pn', 'todd.ns.cloudflare.com', '--script', 'dns-check-zone', '--script-args=dns-check-zone.domain=www.macmonster.com']
Note that shlex split up the option "--script dns-check-zone" into two tokens. On the other hand it kept "--script-args='dns-check-zone.domain=www.macmonster.com'", but removed the single-quotes.
import subprocess
output = subprocess.check_output(["/usr/bin/nmap", "-sP", "-n", "172.16.1.0/24"])
output = subprocess.check_output(["/usr/bin/nmap", "-sP", "-n", "172.16.1.0/24"], stderr=subprocess.STDOUT)
Have you tried this:
p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
var = p.stdout.read()
print var
I would have used communicate, but it returns an odd list-type thing.
check_output(shlex.split("/usr/bin/nmap -sP -n 172.16.1.0/24"))importshlexmodule first`