正则表达式 - 正则不匹配#评论中的空格

问题描述

问 题

Input:
The river is black. # what the fuck

awk output:
$1 - The
$2 - river
$3 - is
$4 - black.
$5 - # what the fuck 

Input:
The  girl    is   a    boy.  #   Stupid        idea

awk output:
$1 - The
$2 - girl
$3 - is
$4 - a
$5 - boy.
$6 - #   Stupid        idea

解决方案

没法直接设置

[root@~]#echo 'The river is black. # what the fuck' |awk  '{for(i=1;i<=NF;i++){if(substr($i,1,1)=="#"){$i=substr($0,index($0,"#"));NF=i}print "$",i,"=",$i}}'
$ 1 = The
$ 2 = river
$ 3 = is
$ 4 = black.
$ 5 = # what the fuck

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