linux 实现excel vlookup

脚本内容

vlookup.sh

#!/bin/bash
awk 'NR==FNR{a[$1]=$0;next}NR>FNR{if($1 in a)print $0" "a[$1]}' $1 $2 >vlookup_result

[root@localhost/home/]#cat aa
1 a e
2 b f
3 c g
4 d h
5 i j
[root@localhost/home/]#cat bb
4
3
2
1
[root@localhost/home/]#./vlookup.sh aa bb
[root@localhost/home/]#cat vlookup_result
4       4 d h
3       3 c g
2       2 b f
1       1 a e