在awk中调用函数 [英] Calling function in awk

问题描述

我的程序遇到问题.我正在使用awk，并且尝试在其中调用一个函数.

I encountered a problem in my program. I am using awk and I am trying to call a function in it.

function dots()
{
    for ((i= 0 ; i < $1; i++)); do
        echo "."
    done
}


awk '{k=$1; sub(/[^ ]+ /,"__",$0); $1=$1; print $0 "\t:", (dots k) }'

然后我尝试调用该函数并将k作为第一个参数传递(k是数字).有没有办法在awk中调用函数?

Then I try to call the function and pass k as the first argument (k is a number). Is there a way to call a function in awk?

推荐答案

您无法从awk调用Shell函数. 您必须编写一个等效的awk函数，例如将此添加到您的awk脚本中:

You just can't call shell functions from awk. You have to write an equivalent awk function, e.g. add this to your awk script:

function dots(n) {while(n-- > 0) print "."}

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