Local MapReduce Program
mapred [option] [INPUT]
option is :
--mapper | -m the command to execute in shell
--count | -c the process num in background
--help | -h
--version| -v
- libev(libev.a 4.15)
nohup cat input.txt | ./mapred -m "php test.php" -c 5 > result.txt 2>err &