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lang-c
FNR==NR{a[$1]=$2;next}will contain5,9or what exactly will the arrayacontain? If it contains5,9the check$1 in a{$3=a[$1]}does not make sense to me. Can you elaborate?file2.csv, the contents of arrayaare:a['alice']=5anda['jessica']=9. The test$1 in ais true if the contents of$1are one of the keys (not one of the values) of arraya.$1in file1"