Shell script 練習

看到Ols3前輩出的練習題，故嘗試寫看看，題目是這個樣子的:

# 把 以下資料檔 d1.txt d2.txt 予以整合

d1.txt

====================

abc:12

bob:25

cdc:36

OK:121

Tomy:99

Jack:108

d2.txt

====================

Jack:9

cdc:8

OK:11

Tomy:22

bob:5

abc:88

試寫一 script 來處理 d1.txt d2.txt 使其變成

abc:12:88

bob:25:5

cdc:36:8

Jack:108:9

OK:121:11

Tomy:99:22

My script:

#!/bin/bash

for VAR1 in `cat ./d1.txt | sort`

do

for VAR2 in `cat ./d2.txt | sort`

do

if [ `echo $VAR1 | cut -d: -f1` = `echo $VAR2 | cut -d: -f1` ]; then

echo $VAR1\:`echo $VAR2 | cut -d: -f2`

fi

done

done

References:

http://news.ols3.net/techdoc/old/shell/x1003.html