1

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awk输出：

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;
    }
}
4

2 回答 2

2

你很接近：

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。

于 2013-09-29T19:37:27.463 回答
1

尝试：

awk '{for (i=NF; i>0; i--) printf("%s ",$i);print ""}' input.txt
于 2013-09-29T19:36:21.830 回答