沖銷場與AWK

Question

我需要扭轉包含文本文件的字段：

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

我需要awk到輸出：

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。 這就是我現在所擁有的：

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 "" 
} 

以上是假設你不關心領域之間的空白。

Answer 2

嘗試：

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