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73.
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Options can be grouped in clusters so <screen>ls -sh</screen> is exactly the same command as <screen>ls -s -h</screen> Most options have a long version, prefixed with two dashes instead of one, so even <screen>ls --size --human-readable</screen> is the same command.
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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:347(para)
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74.
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"Man" and getting help
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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:358(title)
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75.
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<emphasis role="strong"><emphasis>command</emphasis> --help</emphasis> and <emphasis role="strong">man <emphasis>command</emphasis></emphasis> are the two most important tools at the command line.
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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:359(para)
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76.
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Virtually all commands understand the <emphasis role="strong">-h</emphasis> (or <emphasis role="strong">--help</emphasis>) option which will produce a short usage description of the command and it's 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
basic-commands/C/basic-commands.xml:366(para)
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77.
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Every command and nearly every application in Linux will have a man (manual) file, so finding them 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> will bring up the <command>mv</command> (move) manual.
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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:376(para)
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78.
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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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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:385(para)
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79.
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<screen>man man</screen> will bring 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
basic-commands/C/basic-commands.xml:390(para)
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80.
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<screen>man intro</screen> is especially useful - it displays the "Introduction to user commands" which is a well-written, fairly brief introduction to the Linux command line.
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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:396(para)
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81.
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There are also <command>info</command> pages, which are generally more in-depth 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
basic-commands/C/basic-commands.xml:401(para)
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82.
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Searching for man files
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(no translation yet)
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Located in
basic-commands/C/basic-commands.xml:411(title)
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