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Vlookup functionality in Bash

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# 1  
Old 08-22-2011
Vlookup functionality in Bash
Hi please help in the below request

Input File 1:
a,1
b,2
c,3
d,4
e,5
f,6

Input File 2:
2
5
3
1

Output Required:
b 2
e 5
c 3
a 1
# 2  
Old 08-22-2011
Code:
awk -F, 'NR==FNR{a[$2]=$1;next}{print a[$1],$1;}' file1 file2

Guru.
# 3  
Old 08-22-2011
Read about fgrep
Code:
 
 
bash-3.00$ fgrep -f two.txt one.txt 
a,1
b,2
c,3
e,5
bash-3.00$ cat one.txt 
a,1
b,2
c,3
d,4
e,5
f,6
bash-3.00$ cat two.txt 
2
5
3
1

# 4  
Old 08-22-2011
Code:
xargs printf "sed -n '%sp; s/,/ /' FILE1\n" <FILE2 | sh

Smilie
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