while 循环的输入来自 `command` 的输出 [英] input of while loop to come from output of `command`

问题描述

#I used to have this, but I don't want to write to the disk
#
pcap="somefile.pcap"
tcpdump -n -r $pcap > all.txt
while read line; do  
  ARRAY[$c]="$line"
  c=$((c+1))  
done < all.txt  

以下方法无效.

# I would prefer something like...
#
pcap="somefile.pcap"
while read line; do  
  ARRAY[$c]="$line"
  c=$((c+1))  
done < $( tcpdump -n -r "$pcap" )

Google 上的结果太少(不明白我想找到什么 :( ).我想保持它与 Bourne 兼容 (/bin/sh)，但它没有em> 成为.

Too few results on Google (doesn't understand what I want to find :( ). I'd like to keep it Bourne-compatible (/bin/sh), but it doesn't have to be.

推荐答案

for line in $(tcpdump -n -r $pcap)  
do  
 command  
done 

这并没有完全满足我的需求.但它很接近.与Shell兼容.我正在从 tcpdump 输出创建 HTML 表.for 循环创建了一个新的 <tr>每个单词的行.它应该为每个行( 结尾)创建一个新行.粘贴 bin script01.sh.

This isn't exactly doing what I need. But it is close. And Shell compatible. I'm creating HTML tables from the tcpdump output. The for loop makes a new <tr> row for each word. It should make a new row for each line ( ending). Paste bin script01.sh.

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