执行awk输出

发布于 2024-12-05 12:05:11 字数 163 浏览 1 评论 0原文

while read line;
do
  awk '/ differ$/ {print "diff "$2" "$4" > "$2".diff"}{}';
done < diffs.txt

这将完全按照我想要的方式打印命令。我如何告诉它执行命令？

原文

while read line;
do
  awk '/ differ$/ {print "diff "$2" "$4" > "$2".diff"}{}';
done < diffs.txt

This prints the command exactly as I want it. How do I tell it to execute the command?

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千紇 2024-12-12 12:05:11

<代码>| bash 可以解决问题...

while read line;
do
  awk '/ differ$/ {print "diff "$2" "$4" > "$2".diff"}{}' | bash;
done < diffs.txt

| bash does the trick...

while read line;
do
  awk '/ differ$/ {print "diff "$2" "$4" > "$2".diff"}{}' | bash;
done < diffs.txt

回复收藏 0 原文

寄意 2024-12-12 12:05:11

您可以使用“system”命令来执行此类任务。

awk '/ differ$/ {system("diff "$2" "$4" > "$2".diff")} diffs.txt

You can use the "system" command for these kinds of tasks.

awk '/ differ$/ {system("diff "$2" "$4" > "$2".diff")} diffs.txt

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夜唯美灬不弃 2024-12-12 12:05:11

对于这个问题，接受的答案（@micheal）仅部分正确。它适用于几乎所有情况，但命令需要创建新终端或伪终端时除外。就像“ssh”命令或“tmux new”一样。

以下代码也适用于这些情况。

while read line;
do

  $(awk '/ differ$/ {print "diff "$2" "$4" > "$2".diff"}{}')
done < diffs.txt

$() 是 bash 命令替换模式。您可以在此处阅读有关 Linux 文档项目中的命令替换的更多信息：http://www. tldp.org/LDP/abs/html/commandsub.html。

The accepted answer (by @micheal) for this question is only partially correct. It works for almost all cases, except when the command requires creation of a new terminal or pseudo terminal. Like 'ssh' commands, or 'tmux new'..

Following code works for those cases also.

while read line;
do

  $(awk '/ differ$/ {print "diff "$2" "$4" > "$2".diff"}{}')
done < diffs.txt

$() is the bash command substitution pattern. You can read more about command substitution in Linux Documentation Project here : http://www.tldp.org/LDP/abs/html/commandsub.html.

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