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Get a better understanding of all those "strange" characters UNIX users are typing. Learn how to use pipelines, redirections, operators, and more in UNIX.
...the pipeline allows you to redirect the standard output (stdout) of one command to become the standard input (stdin) of the following command in a single chained execution. Using the pipeline isn't limited to one instance per execution. Quite often, the stdout of one command is used as stdin of the following command, and the subsequent stdout is redirected yet again as stdin to another command and so on.
For example, one of the first things most UNIX administrators do on their systems during troubleshooting or daily checks is look at processes running currently on the system. Listing 1 shows such a check.
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