用awk反转一个字段

Question

我需要反转包含以下内容的文本文件的字段：

Computer science is fun
I also enjoy math
But I don't like science

我需要输出awk ：

line 1: Computer science is fun
line 1 reversed: fun is science Computer

line 2: I also enjoy math
line 2 reversed: math enjoy also I

....... 等等。 这就是我现在所拥有的：

BEGIN {print "start"}
{
    for(i=NF; i>=1; i--)
    {
        printf "line %d: %s\n", NR , $0;
        printf "line %d: reversed: %s", NR, $i;
    }
}

Answer 1

你很亲密：

BEGIN {print "start"}
{
    printf "line %d: %s\n", NR , $0
    printf "line %d: reversed:", NR
    for(i=NF; i>=1; i--)
    {
        printf " %s", $i
    }
    print ""
}

以上假设您不关心字段之间的空白区域。

Answer 2

尝试：

awk '{for (i=NF; i>0; i--) printf("%s ",$i);print ""}' input.txt