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87 lines
4.5 KiB
Markdown
87 lines
4.5 KiB
Markdown
[#]: collector: (lujun9972)
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[#]: translator: ( )
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: subject: (How to bring good fortune to your Linux terminal)
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[#]: via: (https://opensource.com/article/18/12/linux-toy-fortune)
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[#]: author: (Jason Baker https://opensource.com/users/jason-baker)
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[#]: url: ( )
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How to bring good fortune to your Linux terminal
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======
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Bring quotes and quips to the command line with the fortune utility.
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It's December, and if you haven't found a [tech advent calendar][1] that sparks your fancy yet, well, maybe this one will do the trick. Every day, from now to the 24th, we're bringing you a different Linux command-line toy. What's a command-line toy, you ask? It could be a game or any simple diversion to bring a little happiness to your terminal.
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You may have seen some of these before. We hope you'll find something new, too. Either way, we hope you have fun following along.
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Today's toy, **fortune** , is an old one. Versions of it date back to the 1980s when it was included with Unix. The version I installed in Fedora was available under a BSD license, and I grabbed it with the following.
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```
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$ sudo dnf install fortune-mod -y
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```
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Your distribution may be different. On some, you may need to install the fortunes separately from **fortune** itself (try searching your package manager for "fortunes*"). You can also check out the source code on [GitHub][2]. Then, just run **fortune** to get, well, a fortune.
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```
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$ fortune
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"Time is an illusion. Lunchtime doubly so."
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-- Ford Prefect, _Hitchhiker's Guide to the Galaxy_
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```
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So why do you need fortunes at the terminal? For fun, of course. Perhaps you'd like to add them to the message of the day on your system?
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Personally, I like using the **fortune** command as a built-in piece of dummy data when I'm using the terminal to parse text, particularly with [regular expressions][3], and want something simple to try it out on.
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For example, let's say I was testing our a transformation with the **tr** command to replace letter the letter e with a numeral 3.
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```
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$ fortune | tr 'eE' '3'
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Unix 3xpr3ss:
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All pass3ng3r bring a pi3c3 of th3 a3roplan3 and a box of tools with th3m to
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th3 airport. Th3y gath3r on th3 tarmac, arguing constantly about what kind
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of plan3 th3y want to build and how to put it tog3th3r. 3v3ntually, th3
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pass3ng3rs split into groups and build s3v3ral diff3r3nt aircraft, but giv3
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th3m all th3 sam3 nam3. Som3 pass3ng3rs actually r3ach th3ir d3stinations.
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All pass3ng3rs b3li3v3 th3y got th3r3.
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```
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So what fortunes come with your distribution? Take a look in your **/usr/share/games/fortune** directory to find them all. Here are a few of my favorites.
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```
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Never laugh at live dragons.
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-- Bilbo Baggins [J.R.R. Tolkien, "The Hobbit"]
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I dunno, I dream in Perl sometimes...
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-- Larry Wall in <8538@jpl-devvax.JPL.NASA.GOV>
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I have an existential map. It has "You are here" written all over it.
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-- Steven Wright
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```
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Looking for more on **fortune**? You can, of course, always check out the man page to learn more about the options, or read a little bit more about the history of the command on [Wikipedia][4].
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Do you have a favorite command-line toy that you think I ought to profile? The calendar for this series is mostly filled out but I've got a few spots left. Let me know in the comments below, and I'll check it out. If there's space, I'll try to include it. If not, but I get some good submissions, I'll do a round-up of honorable mentions at the end.
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Check out yesterday's toy, [Drive a locomotive through your Linux terminal][5], and check back tomorrow for another!
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--------------------------------------------------------------------------------
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via: https://opensource.com/article/18/12/linux-toy-fortune
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作者：[Jason Baker][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://opensource.com/users/jason-baker
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[b]: https://github.com/lujun9972
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[1]: https://opensource.com/article/16/11/7-tech-advent-calendars-holiday-season
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[2]: https://github.com/shlomif/fortune-mod
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[3]: https://opensource.com/article/18/5/getting-started-regular-expressions
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[4]: https://en.wikipedia.org/wiki/Fortune_%28Unix%29
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[5]: https://opensource.com/article/18/12/linux-toy-sl
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