Head command - PowerPoint PPT Presentation

Exploring interfaces and filesystems

Exploring interfaces and filesystems. Unit objectives Outline structure of the Linux interface, and roles of the kernel, terminal and shell Enter shell commands, find documentation, use metacharacters, shut down system Learn directory structure, file types, and use wildcards

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The | Symbol

The | Symbol. Accept stdin. Accept stdin. cmd A. cmd B. cmd C. Generate stdout. Generate stderr. Generate stderr. Generate stdout. Generate stderr. Generate stdout. Example: $ ps – ef | more $ ls | more $ ls sort –r | more. wc (word count).

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