awk: two files are queried

Question

I have two files

file1:

>string1Name1
>string2Name2
>string3Name3

file2

Answer 1

your assignment is not right.

$ awk 'BEGIN   {FS=OFS="\t"}
       NR==FNR {a[$1]=$2; next} 
       $1 in a {print a[$1],$2}' file1 file2

Name1 sequence1
Name2 sequence2