The command $ cmd1 | cmd2 | cmd3 connects the standard output of cmd1 to the standard input of cmd2, and again connects the standard output of cmd2 to the standard input of cmd3 using the pipeline operator '|'
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Extend your shell with pipelining (mandatory for teams of 3 or 4) The command $ cmd1 | cmd2 | cmd3 connects the standard output of cmd1 to the standard input of cmd2, and again connects the standard output of cmd2 to the standard input of cmd3 using the pipeline operator '|'. You will need to use the pipe() system call. Your shell should be able to handle up to three commands chained together with the pipeline operator (i.e., your shell should support up to two pipes pipelined together). This portion of the project should only require implementing support for a pipeline of 2 pipes/3 commands (no working with redirection). Your shell does not need to handle built-in commands implemented above (i.e., cd, exit, path, and myhistory) in pipeline.
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