Question

可以说，我有两个输入文件，fileA.txt和fileB.txt。文件是这样的：

FileA.txt
Color
yellow
orange
black
Fruit
apple
banana
Weekday
monday
sunday

FileB.txt
Color
blue
green
Fruit
melon
Weekday
saturday
tuesday
thursday

我想在所有文件中提取Color，Fruit，Weekday下面的信息，并为每个字段创建一个新信息。所以，我的输出是3个文件，Color.txt，Fruit.txt和Weekday.txt就像这样。

Color.txt
Color_A
yellow
orange
black
Color_B
blue
green

Fruit.txt
Fruit_A
apple
banana
Fruit_B
melon

Weekday.txt

类似

我希望现在更清楚了，谢谢。

Answer 1

awk救援！

$ awk '{suffix=substr(FILENAME,5,1)}
         /Color|Fruit|Weekday/{file=$1".txt"; $1=$1"_"suffix}
             {print > file}' FileA.txt FileB.txt                   


$ head {Fruit,Color,Weekday}.txt          

==> Fruit.txt <==                                                                                                     
Fruit_A
apple
banana
Fruit_B
melon

==> Color.txt <==
Color_A
yellow
orange
black
Color_B
blue
green

==> Weekday.txt <==
Weekday_A
monday
sunday
Weekday_B
saturday
tuesday
thursday

Answer 2

在POSIX shell脚本中（即bash，dash等）：

rm Color.txt Fruit.txt Weekday.txt  # old files will spoil this.
for f in A B
do
    while read x
    do 
        L=${x%${x#?}}
        l=$(echo $L | tr '[:upper:]' '[:lower:]')
        if [ $L != $l ]
        then
            F=$x.txt
            echo ${x}_$f >> $F
        else
            echo $x >> $F
        fi
    done < File$f.txt
done

输出：

head {Fruit,Color,Weekday}.txt
==> Fruit.txt <==
Fruit_A
apple
banana
Fruit_B
melon

==> Color.txt <==
Color_A
yellow
orange
black
Color_B
blue
green

==> Weekday.txt <==
Weekday_A
monday
sunday
Weekday_B
saturday
tuesday
thursday

工作原理：暂停（我担心这是一个学业上的问题，如果OP公布上述shell代码可能会更好，然后根据需要解释或批评。）

sed从多个文本文件中提取文本

2 个答案: