CalledProcessError:命令'('grep'，'route')'返回非零退出状态1 [英] CalledProcessError: Command '('grep', 'route')' returned non-zero exit status 1
问题描述
Python3
OSX 10.13.2
我正在尝试制作 FACEBOOK_WHITELIST ，以防止在收听 webhook
时来自互联网的恶意攻击我正在获取IP地址.该命令非常简单，只需 whois ， pipe 和 grep .
I am trying to make FACEBOOK_WHITELIST in order to prevent malicious attack from the internet when listening to webhook
I am in the process of getting the IP addresses. The command is very simple just whois, pipe, and grep.
问题:
def test():
import subprocess
ps = subprocess.Popen(
["whois", "-h", "whois.radb.net", "--", "'-i origin AS32934'"],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT
)
output = subprocess.check_output(('grep', 'route'), stdin=ps.stdout)
ps.wait()
引用:
---------------------------------------------------------------------------
CalledProcessError Traceback (most recent call last)
<ipython-input-28-8d5c434d09bd> in <module>()
5 stderr=subprocess.STDOUT
6 )
----> 7 output = subprocess.check_output(('grep', 'route'), stdin=ps.stdout)
8 ps.wait()
~/.pyenv/versions/3.6.4/lib/python3.6/subprocess.py in check_output(timeout, *popenargs, **kwargs)
334
335 return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
--> 336 **kwargs).stdout
337
338
~/.pyenv/versions/3.6.4/lib/python3.6/subprocess.py in run(input, timeout, check, *popenargs, **kwargs)
416 if check and retcode:
417 raise CalledProcessError(retcode, process.args,
--> 418 output=stdout, stderr=stderr)
419 return CompletedProcess(process.args, retcode, stdout, stderr)
420
CalledProcessError: Command '('grep', 'route')' returned non-zero exit status 1.
然后我尝试了较小的函数调用.他们都不是工作.第一个是单引号中的单字符串
Then I tried smaller function call. Neither of them are work. First one is single string in single quote
In [46]: ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "'-i origin AS32934'"])
...:
...:
In [47]: % No entries found for the selected source(s).
第二个是将字符串拆分为多个双引号字符串
Second one is split string into multiple double quoted string
In [48]: ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "'-i", "origin", "AS32934'"])
In [49]: % No entries found for the selected source(s).
% No entries found for the selected source(s).
% No entries found for the selected source(s).
我在哪里错了?
更新:
@Jean-FrançoisFabre
Update:
@Jean-François Fabre
In [49]: ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "-i", "origin", "AS32934"])
In [50]: %% Attribute name after "-i" is invalid or unsupported.
% No entries found for the selected source(s).
aut-num: AS32934
as-name: Facebook
descr: Facebook
member-of: AS-FACEBOOK
import: from AS-ANY accept ANY AND NOT {0.0.0.0/0}
export: to AS-ANY announce AS-FACEBOOK AND NOT {0.0.0.0/0}
admin-c: FBNetEng
tech-c: FBNetEng
notify: noc@fb.com
mnt-by: MAINT-AS32934
changed: vvasilev@fb.com 20170627 #21:09:05Z
source: RADB
参考文献:
CallProcessError
管道grep
推荐答案
ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "'-i origin AS32934'"])# Wrong
您引用最后一个参数的尝试与 Popen 的引用是多余的.我无法测试，但是您必须删除输入的多余引号:
your attempt to quote the last aegument is redundant with the quoting done by Popen. I can't test, but you have to remove the extra quotes you've thrown in:
ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "-i origin AS32934"])
Popen 检测到参数中是否有空格，并在需要时自动将其引号.添加更多的引号会使 Popen 添加更多的引号，并且命令的参数是错误的.
Popen detects that there are spaces in the argument and quotes it automatically if needed. Adding more quotes makes Popen add even more quotes and the arguments of your commands are wrong.
除非您需要分别传递每个参数，否则尝试这样做也将失败，因为您将引号留在了第一个&中.最后一个论点.没用:
unless you need to pass each argument separately but your attempt in doing this also fails because you left the quotes in the first & last argument. That doesn't cut it:
ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "'-i", "origin", "AS32934'"]# Wrong
应该是
ps = subprocess.Popen(["whois", "-h", "whois.radb.net", "--", "-i", "origin", "AS32934"]
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