Try these built-in command and a few add-on tools.

试试这些内置命令和一些附加工具。

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To turn options on with the built-in command set, use the -o switch.

若要开启内置命令集选项，请使用 -o 开关。

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The type command also shows that cd is a built-in command and is duplicated externally as /usr/bin/cd.

type 命令还显示出，cd 是一个内置的命令，并且与外部命令 /usr/bin/cd 是相同的。

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Designed for the creative consumer who seeks stunning images and HD video, the V2 incorporates a myriad of new features aimed at improving the shooting experience, including a new ergonomic grip for familiar handling, a built-in flash and the addition of a Command Mode Dial to provide easy access to features and controls.

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The Smartphone will sport the usual PDA features, like an address book that takes up to 2, 000 entries, and will also come equipped with a built-in speakerphone and e-mail retrieval by voice command.

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Mr. Capus had publicly said as recently as April that the team in place at "Today" was the right one, but the show's executive producer, Jim Bell, and Mr. Burke, who have built a rapport since Mr. Burke came from his role as Mr. Robert's second-in-command at Comcast to lead NBCUniversal, favored a more aggressive approach, according to people familiar with the matter.

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