关于 KornShell 中的“for"循环 [英] Regarding 'for' loop in KornShell

问题描述

有没有办法在 KornShell (ksh) 中使用for"来实现以下内容?这是 C 等效项:

Is there a way to implement the following using 'for' in KornShell (ksh)? Here is the C equivalent:

for(i=1;i<20;i++)
{
    printf("%d",i);
}

我想知道这是否可以仅使用for"而不是while"来实现

I was wondering if this can be implemented using just 'for' and not 'while'

我尝试了以下方法，似乎不起作用.

I tried the following, it does not seem to work.

for i in [1-20]
    do

    print $i
    done

请告诉我您的想法和解决方案.

Please let me know your ideas and solutions.

推荐答案

不幸的是，它看起来好像 ksh 不支持基于范围的大括号扩展或支持 (( )) 构造以便紧凑地执行此操作，您需要像这样调用外部二进制 seq:

Unfortunately, it looks as if ksh does not have support for range-based brace expansion or support the (( )) construct so to do this compactly, you'll need to call the external binary seq like so:

for i in $(seq 1 20); do
  echo $i
done

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