对于每一个行文件syncronously执行命令，并保存到另一个文件的换行符 [英] For each line in file execute command syncronously and save to newline of another file

问题描述

我有一个的wget 命名脚本 Chktitle.sh - 该脚本的命令如下图所示。

  $ Chktitle.sh我的网址
 

然后我有一个文件名为 url.txt 有超过100线，URL和IPS检查网页的标题。
然后，我有 RESULTS.TXT 作为一个空白文件。

有没有什么办法可以对文件中的每一行类似下面执行重复动作：

 从url.txt抢行1
 -----
 然后执行Chktitle.sh一号线
 -----
 现在保存在RESULTS.TXT一号线的结果
 -----
 现在后藤2号线........
 等等等等
 

我要确保它不仅将previous一个人完成后，执行下一行。
任何一个可以告诉我执行此没有简单的方法？我很高兴地用Perl，sh和考虑其他语言。

中的内容 chktitle.sh ：

 ＃！/斌/庆典
字符串= $ 1/搜索/
wget的--quiet -O  -  $字符串\\
| SED -n -e'！;标题＆GT;（* \\）\\＆LT; /标题＆GT; S * LT。！* \\ 1 p'
 

解决方案

也许这样的事情可以帮助（前提是我理解正确）：

 而读线;做
    /path/to/Chktitle.sh X$行＆GT;＆GT; RESULTS.TXT;
完成＆LT; /path/to/input.txt
 

对于 /path/to/input.txt 的每一行，执行你的脚本，并附加输出（＆GT;＆GT; ），以 RESULTS.TXT 。

当然，你总是可以添加其他语句在while循环：

 而读线;做
    ＃初始化VAR来chktitle输出
    VAR = $（/路径/要/ Chktitle.sh X$行）;    ＃添加条件
    如果[$ VAR=谷歌];然后
        回声谷歌＆GT;＆GT;的Result.txt;
    其他
        回声没有谷歌＆GT;＆GT;的Result.txt;
    科幻
完成＆LT; /path/to/input.txt
 

I have a wget script named Chktitle.sh -- this script takes a command like below

$ Chktitle.sh "my url"

I then have a file name url.txt with over 100 lines with urls and ips to check for web-page titles. Then i have results.txt as a blank file.

Is there any way I can perform a repetitive action like below for each line in the file:

 Grab line1 from url.txt
 -----
 then execute Chktitle.sh "line1"
 -----
 Now save the result for line1 in results.txt
 -----
 Now goto Line2 ........


 etc etc etc

I need to make sure that it will only execute the next line after the previous one has finished. Can any one show me any easy way to perform this? I am happy to use Perl, sh, and consider other languages..

The contents of chktitle.sh:

#!/bin/bash
string=$1"/search/"
wget --quiet -O - $string \
| sed -n -e 's!.*<title>\(.*\)</title>.*!\1!p'

解决方案

Maybe something like this could help (provided that I understood correctly) :

while read line; do
    /path/to/Chktitle.sh x"$line" >> results.txt;
done < /path/to/input.txt

For each line in /path/to/input.txt, execute your script and append the output (>>) to results.txt.

Of course you could always add additional statements in your while loop :

while read line; do
    # Initialise var to output of chktitle
    var=$(/path/to/Chktitle.sh x"$line");

    # Add conditions
    if [ "$var" = "google" ]; then
        echo "google" >> result.txt;
    else
        echo "not google" >> result.txt;
    fi
done < /path/to/input.txt

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