当我定向到文件时，awk冻结 [英] awk freezing when I direct to a file

问题描述

因此，当我在Mac上运行此程序时:

So when I run this on a mac:

awk 'END { for (name in ENVIRON) {
  print "key: "name; }
}' >> app-deployment.yaml

awk冻结了.如果我将其更改为仅打印到/dev/null这样

awk just freezes. If I change it to just print to /dev/null like this

awk 'END { for (name in ENVIRON) {
  print "key: "name; }
}' < /dev/null

工作正常.我的重定向做错了吗?我在这还有别的地方吗?

It works fine. Am I doing something wrong with my redirection? Is there something else I'm doing wrong here?

推荐答案

将END更改为BEGIN即可在没有任何输入的情况下工作:

Change END to BEGIN to be able to work without any input:

awk 'BEGIN { for (name in ENVIRON) {
  print "key: "name; }
}' >> app-deployment.yaml

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