This project about understanding multiprocessing.
Program executed as follows:
./pipex file1 cmd1 cmd2 ... cmdN file2
where cmd are shell command with their parameters.
It behave the same as the shell command:
$> < file1 cmd1 | cmd2 | ... | cmdN > file2
Program supports << and >> when the first parameter is "hede_doc".
This:
$> ./pipex here_doc LIMITER cmd cmd1 file
behaves like this:
$> cmd << LIMITER | cmd1 >> file
