$ nano evalin.txt
$ cat evalin.txt
$ hdfs dfs-put evalin.txt /pigexample
$ pig
grunt> A = LOAD '/pigexample/evalin.txt' USING PigStorage(',') AS (a1:int,a2:chararray,a3:chararray) ;
grunt> DUMP A;
grunt> Result = FILTER A BY a1 IN (2, 4); grunt> DUMP Result;