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78.
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The default behavior for a command may usually be modified by adding <command>--option</command> to the command. For example, the <link linkend="ls"><command>ls</command></link> command has an <command>-s</command> option. The <command>ls -s</command> will include file sizes in the listing. There is also a <command>-h</command> option to display file sizes in a <quote>human readable</quote> format.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:363(para)
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79.
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Options can be grouped in clusters, so <screen>ls -sh</screen> is the same command as <screen> ls -s -h</screen> Most options have a long version prefixed with two dashes instead of one, so <screen>ls --size --human-readable</screen> is the same command as <screen>ls -sh</screen>
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(no translation yet)
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Located in
docs/cli/C/cli.xml:371(para)
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80.
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<quote>Man</quote> and Getting Help
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<quote>Man</quote> 及获取帮助
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Translated and reviewed by
Wylmer Wang
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Located in
docs/cli/C/cli.xml:382(title)
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81.
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<emphasis><emphasis>command</emphasis> --help</emphasis> and <command>man</command><emphasis>command</emphasis> are the two most important tools at the command line.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:385(para)
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82.
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Virtually all commands understand the <command>-h</command> (or <command>--help</command>) option, which will produce a short usage description of the command and its options, then exit back to the command prompt. Type: <screen>man -h</screen> or <screen>man --help</screen> to see this in action.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:387(para)
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83.
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Every command and nearly every application in <trademark>Linux</trademark> has a <abbrev>man</abbrev> (manual) file. It is as simple as typing <command>man command</command> to bring up a longer manual entry for the specified command. For example: <screen>man mv</screen> brings up the <command>mv</command> manual.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:399(para)
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84.
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Move up and down the man file with the arrow keys, and quit back to the command prompt with <keycap>q</keycap>.
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使用箭头键在 man 文件中上下移动，用 <keycap>q</keycap> 键退回到命令提示符。
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Translated and reviewed by
Wylmer Wang
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Located in
docs/cli/C/cli.xml:399(para)
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85.
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<screen>man man</screen> brings up the manual entry for the <command>man</command> command, which is a good place to start.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:403(para)
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86.
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<screen>man intro</screen> is especially useful. It displays the <quote>introduction to user commands</quote> which is a well-written, brief introduction to the <trademark>Linux</trademark> command line.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:414(para)
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87.
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There are also <command>info</command> pages, which generally go into more detail than <command>man</command> pages. Try: <screen>info info</screen> for the introduction to info pages.
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(no translation yet)
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Located in
docs/cli/C/cli.xml:412(para)
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