Question

我正在测试一些IP：端口代理，通过下载内容来查看其中一些代理是否有效。我的工作脚本是

#!/bin/bash

for pro in $(cat testing.txt);do

wget -e use_proxy=yes -e http_proxy=$pro --tries=1 --timeout=15 http://something.com/download.zip
if grep --quiet "200 OK"; then
  echo $pro >> ok.txt
else
  echo $pro >>notok.txt
fi

done

wget成功的典型输出是

--2014-06-08 10:45:31--  http://something.com/download.zip
Connecting to 186.215.168.66:3128... connected.
Proxy request sent, awaiting response... 200 OK
Length: 30688 (30K) [application/zip]
Saving to: `download.zip'

100%[======================================>] 30,688      7.13K/s   in 4.2s

并且失败时输出

--2014-06-08 10:45:44--  http://something.com/download.zip
Connecting to 200.68.9.92:8080... connected.
Proxy request sent, awaiting response... Read error (Connection timed out) in headers.
Giving up.

现在的问题是，grep似乎无法正常工作！它输出notok.txt文件中的所有IP地址。天气wget成功与否它输出notok.txt中的所有地址。我该如何解决这个问题？

Answer 1

以下是一些更正：

1）您应该避免使用for i in $(cmd)。你应该阅读：

此提醒how to read a command output or file content with a loop in Bash;
此提醒关于the necessity (or not) to protect your variables with double quotes。

2）grep必须读取一个流：

grep [options...] [pattern] file
command|grep [options...] [pattern]
grep [options...] [pattern] < <(command)
grep [options...] [pattern] <<< "some text"

3）在这种情况下无需使用grep：

#!/bin/bash

while read -r pro; do
    out="$(wget -e use_proxy=yes -e http_proxy=$pro --tries=1 --timeout=15 http://something.com/download.zip)"
    if [[ $out =~ "200 OK" ]]; then
        echo "$pro" >> ok.txt
    else
        echo "$pro" >> notok.txt
    fi
done < testing.txt

Answer 2

Bash脚本以使用wget检查代理列表

#!/usr/bin/bash

files="proxies_list.txt" #file with proxies to test in <ip>:<port> format

rm not_ok.txt
rm ok.txt

while read -r pro; do

    out=$(wget.exe -qO- --tries=1 --timeout=5 --no-check-certificate -e use_proxy=on -e https_proxy=$pro https://example.com)

    if [[ $out ]]; then
        echo "$pro" >> ok.txt
        echo "$pro  ----    OK"
    else
        echo "$pro" >> not_ok.txt
        echo "$pro  ----    NOT OK"
    fi
done < "$files"

ip代理测试使用wget无法正常工作

2 个答案:

Bash脚本以使用wget检查代理列表