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qhwdw
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Translating by qhwdw Guide to Linux App Is a Handy Tool for Every Level of Linux User
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============================================================
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The Guide to Linux app is not perfect, but it's a great tool to help you learn your way around Linux commands.[Used with permission][7]Essence Infotech LLP
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Remember when you first started out with Linux? Depending on the environment you’re coming from, the learning curve can be somewhat challenging. Take, for instance, the number of commands found in _ /usr/bin_ alone. On my current Elementary OS system, that number is 1,944\. Of course, not all of those are actual commands (or commands I would use), but the number is significant.
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Because of that (and many other differences from other platforms), new users (and some already skilled users) need a bit of help now and then.
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For every administrator, there are certain skills that are must-have:
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* Understanding of the platform
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* Understanding commands
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* Shell scripting
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When you seek out assistance, sometimes you’ll be met with RTFM (Read the Fine/Freaking/Funky Manual). That doesn’t always help when you have no idea what you’re looking for. That’s when you’ll be glad for apps like [Guide to Linux][15].
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Unlike most of the content you’ll find here on Linux.com, this particular article is about an Android app. Why? Because this particular app happens to be geared toward helping users learn Linux.
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And it does a fine job.
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I’m going to give you fair warning about this app—it’s not perfect. Guide to Linux is filled with broken English, bad punctuation, and (if you’re a purist) it never mentions GNU. On top of that, one particular feature (one that would normally be very helpful to users) doesn’t function enough to be useful. Outside of that, Guide to Linux might well be one of your best bets for having a mobile “pocket guide” to the Linux platform.
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With this app, you’ll enjoy:
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* Offline usage.
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* Linux Tutorial.
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* Details of all basic and advanced Linux commands of Linux.
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* Includes command examples and syntax.
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* Dedicated Shell Script module.
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On top of that, Guide to Linux is free (although it does contain ads). If you want to get rid of the ads, there’s an in-app purchase ($2.99 USD/year) to take care of that.
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Let’s install this app and then take a look at the constituent parts.
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### Installation
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Like all Android apps, installation of Guide to Linux is incredibly simple. All you have to do is follow these easy steps:
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1. Open up the Google Play Store on your Android device
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2. Search for Guide to Linux
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3. Locate and tap the entry by Essence Infotech
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4. Tap Install
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5. Allow the installation to complete
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### [guidetolinux1.jpg][8]
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Figure 1: The Guide to Linux main window.[Used with permission][1]
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Once installed, you’ll find the launcher for Guide to Linux in either your App Drawer or on your home screen (or both). Tap the icon to launch the app.
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### Usage
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Let’s take a look at the individual features that make up Guide to Linux. You will probably find some features more helpful than others, and your experience will vary. Before we break it down, I’ll make mention of the interface. The developer has done a great job of creating an easy-to-use interface for the app.
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From the main window (Figure 1), you can gain easy access to the four features.
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Tap any one of the four icons to launch a feature and you’re ready to learn.
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### [guidetolinux2.jpg][9]
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Figure 2: The tutorial begins at the beginning.[Used with permission][2]
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### Tutorial
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Let’s start out with the most newbie-friendly feature of the app—Tutorial. Open up that feature and you’ll be greeted by the first section of the tutorial, “Introduction to the Linux Operating System” (Figure 2).
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If you tap the “hamburger menu” (three horizontal lines in the top left corner), the Table of Contents are revealed (Figure 3), so you can select any of the available sections within the Tutorial.
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### [guidetolinux3.jpg][10]
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Figure 3: The Tutorial Table of Contents.[Used with permission][3]
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Unless you haven’t figured it out by now, the Tutorial section of Guide to Linux is a collection of short essays on each topic. The essays include pictures and (in some cases) links that will send you to specific web sites (as needed to suit a topic). There is no interaction here, just reading. However, this is a great place to start, as the developer has done a solid job of describing the various sections (grammar notwithstanding).
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Although you will see a search option at the top of the window, I haven’t found that feature to be even remotely effective—but it’s there for you to try.
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For new Linux users, looking to add Linux administration to their toolkit, you’ll want to read through this entire Tutorial. Once you’ve done that, move on to the next section.
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### Commands
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The Commands feature is like having the man pages, in hand, for many of the most frequently used Linux commands. When you first open this, you will be greeted by an introduction that explains the advantage of using commands.
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### [guidetolinux4.jpg][11]
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Figure 4: The Commands sidebar allows you to check out any of the listed commands.[Used with permission][4]
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Once you’ve read through that you can either tap the right-facing arrow (at the bottom of the screen) or tap the “hamburger menu” and then select the command you want to learn about from the sidebar (Figure 4).
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Tap on one of the commands and you can then read through the explanation of the command in question. Each page explains the command and its options as well as offers up examples of how to use the command.
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### Shell Script
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At this point, you’re starting to understand Linux and you have a solid grasp on commands. Now it’s time to start understanding shell scripts. This section is set up in the same fashion as is the Tutorial and Commands sections.
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You can open up a sidebar Table of Contents to take and then open up any of the sections that comprise the Shell Script tutorial (Figure 5).
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### [guidetolinux-5-new.jpg][12]
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Figure 5: The Shell Script section should look familiar by now.[Used with permission][5]
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Once again, the developer has done a great job of explaining how to get the most out of shell scripting. For anyone interested in learning the ins and outs of shell scripting, this is a pretty good place to start.
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### Terminal
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Now we get to the section where your mileage may vary. The developer has included a terminal emulator with the app. Unfortunately, when installing this on an unrooted Android device, you’ll find yourself locked into a read-only file system, where most of the commands simply won’t work. However, I did install Guide to Linux on a Pixel 2 (via the Android app store) and was able to get a bit more usage from the feature (if only slightly). On a OnePlus 3 (not rooted), no matter what directory I change into, I get the same “permission denied” error, even for a simple ls command.
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On the Chromebook, however, all is well (Figure 6). Sort of. We’re still working with a read-only file system (so you cannot actually work with or create new files).
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### [guidetolinux6.jpg][13]
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Figure 6: Finally able to (sort of) work with the terminal emulator.[Used with permission][6]
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Remember, this isn’t actually a full-blown terminal, but a way for new users to understand how the terminal works. Unfortunately, most users are going to find themselves frustrated with this feature of the tool, simply because they cannot put to use what they’ve learned within the other sections. It might behoove the developer to re-tool the terminal feature as a sandboxed Linux file system, so users could actually learn with it. Every time a user would open that tool, it could revert to its original state. Just a thought.
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### In the end…
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Even with the terminal feature being a bit hamstrung by the read-only filesystem (almost to the point of being useless), Guide to Linux is a great tool for users new to Linux. With this guide to Linux, you’ll learn enough about Linux, commands, and shell scripting to feel like you have a head start, even before you install that first distribution.
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_Learn more about Linux through the free ["Introduction to Linux" ][16]course from The Linux Foundation and edX._
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--------------------------------------------------------------------------------
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via: https://www.linux.com/learn/intro-to-linux/2017/8/guide-linux-app-handy-tool-every-level-linux-user
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作者：[ JACK WALLEN][a]
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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://www.linux.com/users/jlwallen
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[1]:https://www.linux.com/licenses/category/used-permission
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[2]:https://www.linux.com/licenses/category/used-permission
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[3]:https://www.linux.com/licenses/category/used-permission
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[4]:https://www.linux.com/licenses/category/used-permission
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[5]:https://www.linux.com/licenses/category/used-permission
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[6]:https://www.linux.com/licenses/category/used-permission
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[7]:https://www.linux.com/licenses/category/used-permission
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[8]:https://www.linux.com/files/images/guidetolinux1jpg
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[9]:https://www.linux.com/files/images/guidetolinux2jpg
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[10]:https://www.linux.com/files/images/guidetolinux3jpg-0
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[11]:https://www.linux.com/files/images/guidetolinux4jpg
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[12]:https://www.linux.com/files/images/guidetolinux-5-newjpg
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[13]:https://www.linux.com/files/images/guidetolinux6jpg-0
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[14]:https://www.linux.com/files/images/guide-linuxpng
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[15]:https://play.google.com/store/apps/details?id=com.essence.linuxcommands
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[16]:https://training.linuxfoundation.org/linux-courses/system-administration-training/introduction-to-linux
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[17]:https://www.addtoany.com/share#url=https%3A%2F%2Fwww.linux.com%2Flearn%2Fintro-to-linux%2F2017%2F8%2Fguide-linux-app-handy-tool-every-level-linux-user&title=Guide%20to%20Linux%20App%20Is%20a%20Handy%20Tool%20for%20Every%20Level%20of%20Linux%20User
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为各种类型的 Linux 用户准备的手边工具 Guide to Linux App
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============================================================
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Guide to Linux app （译注：Guide to Linux 是一个 app 名字）并不完美，但它是一个非常好的工具，可以帮助你学习 Linux 命令。Essence Infotech LLP [授权使用][7]。
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还记得当初你使用 Linux 吗？根据所处的环境，你的学习曲线可能有些挑战。比如，在 _ /usr/bin_ 中找到的许多命令。在我目前使用的基本操作系统中，它的数目是 1,944。当然，这并不是真实命令数的全部（或者，我所用到的命令数），但这个数目是很多的。
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正因为如此（并且不同平台不一样），现在，新用户（和一些已经熟悉的用户）需要一些帮助。
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对于每个管理员来说，这些技能是必须具备的：
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* 熟悉平台
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* 理解命令
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* 写 Shell 脚本
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当你寻求帮助时，有时，你需要去“阅读那些该死的手册”（Read the Fine/Freaking/Funky Manual，译注：一个网络用语，简写为RTFM)，当你自己都不知道要找什么的时候，它并不会帮到你。那时，你会为你拥有像 [Guide to Linux][15] 这样的 app 感到高兴。
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不像你在 Linux.com 上看到的那些大多数的内容，这篇文章只是介绍一个 Android app 的。为什么呢？因为这个特殊的 app 是用来帮助用户学习 Linux 的。
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而且，它做的很好。
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关于这个 app 我清楚地告诉你 — 它并不完美。Guide to Linux 里面充斥着很烂的英文，糟糕的标点符号，并且（如果你是一个纯粹主义者），它从来没有提到过 GNU。在它的上部，一个特别的功能（通常它对用户非常有用）是没有足够的功能去使用（译注：是指终端模拟器，后面会详细解释）。除此之外，我敢说 Guide to Linux 可能是 Linux 平台上最好的一个移动端的 “口袋指南”。
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对于这个 app ，你可能会喜欢它的如下特性：
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* 离线使用
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* Linux 教程
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* 基础的和高级的 Linux 命令的详细介绍
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* 包含了命令示例和语法
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* 专用的 Shell 脚本模块
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上面的这些，Guide to Linux 是免费提供的（尽管里面有一些广告）。如果你想去除广告，它有一个 app 内的购买，（$2.99 USD/年）可以去消除广告。
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让我们来安装这个 app，来看一看它的构成。
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### 安装
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像所有的 Android 应用一样，安装 Guide to Linux 是非常简单的。按照以下简单的几步就可以安装它了：
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1. 打开你的 Android 设备上的 Google Play 商店
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2. 搜索 Guide to Linux
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3. 通过 Essence Infotech 定位和轻触进入
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4. 轻触 Install
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5. 允许去完成安装
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### [guidetolinux1.jpg][8]
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图 1： The Guide to Linux 主窗口。[已获授权][1]
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安装完成后，你可以在你的应用抽屉（App Drawer）或主屏幕上（或者两者都有）上找到它去启动 Guide to Linux 。轻触图标去启动这个 app。
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### 使用
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让我们看一下 Guide to Linux 的每个功能。我可以发现某些功能比其它的更有帮助，你的体验将更不一样。在我们分别讲解之前，我将提到这个界面。开发者在为这个 app 创建一个易于使用的界面方面做的很好。
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从主窗口中（图 1），你可以获取四个易于访问的功能。
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轻触四个图标中的任何一个去启动一个功能，然后，准备去学习。
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### [guidetolinux2.jpg][9]
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图 2：教程开始[已获授权][2]
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### 教程
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让我们从这个 app 教程的很多 “新手友好” 的功能开始。打开那个功能，然后，将看到这个教程的欢迎节，“Linux 操作系统介绍”（图 2）。
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如果你轻触 “汉堡包菜单（hamburger menu）” （左上角的三个横线），显示了内容列表（图 3），因此，你可以在教程中选择任何一个可用的节。
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### [guidetolinux3.jpg][10]
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图 3：教程的内容列表[已获授权][3]
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除非你现在还没有搞明白，Guide to Linux 教程的节是每个主题的一系列短文的集合。短文包含图片和链接（在一些案例中），链接将带你到指定的 web 网站（根据主题的需要）。这里没有交互，仅仅只能阅读。但是，这是一个很好的起点，由于开发者在描述各个节方面做的很好（虽然有语法）。
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尽管你可以在窗口的顶部看到一个搜索选项，但是，我还是没有发现这一功能的任何效果 —— 但是，你可以试一下。
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对于 Linux 新手来说，如果希望获得 Linux 管理的技能，你需要去阅读整个教程。完成之后，转到下一个主题。
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### 命令
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命令功能类似于手持的 man 页面，是大量的频繁使用的 Linux 命令。当你首次打开它，欢迎页面将详细解释使用命令的益处。
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### [guidetolinux4.jpg][11]
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图 4：命令侧边栏允许你去查看列出的命令[已获授权][4]
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读完之后，你可以轻触向右的箭头（在屏幕底部）或轻触 “汉堡包菜单” ，然后从侧边栏中选择你想去学习的其它命令。（图 4）
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轻触任意一个命令，你可以阅读这个命令的解释。每个命令解释页面和它的选项都提供了怎么去使用的示例。
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### Shell 脚本
|
||||
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在这个时候，你开始去熟悉 Linux，并对命令已经有一定程序的掌握。现在，是时候去熟悉 shell 脚本了。这一节的设置方式与教程节和命令节相同。
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|
||||
你可以打开内容列表的侧边栏，然后打开包含 shell 脚本教程的任意部分（图 5）。
|
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|
||||
### [guidetolinux-5-new.jpg][12]
|
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|
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图 5：Shell 脚本节看上去很熟悉。[已获授权][5]
|
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|
||||
开发者在解释如何最大限度地利用 shell 脚本方面做的很好。对于任何有兴趣学习 shell 脚本细节的人来说，这是个很好的起点。
|
||||
|
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### 终端
|
||||
|
||||
现在我们到了一个新的地方，开发者在这个 app 中包含了一个终端模拟器。遗憾的是，当你在一个没有 “root” 权限的 Android 设备上安装这个 app 时，你会发现你被锁定进一个只读文件系统中，在那里，大部分命令根本无法工作。但是，我在一台 Pixel 2 （通过 Android 应用商店）上安装的 Guide to Linux 中，可以使用更多的这个功能（还只是较少的一部分）。在一台 OnePlus 3 （非 rooted 的）上，不管我改变到哪个目录，我都是得到相同的错误信息 “permission denied”，甚至是一个简单的命令也如此。
|
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|
||||
在 Chromebook 上，不管怎么操作，它都是正常的（图 6）。可以说，它一直很好地工作在一个只读操作系统中（因此，你不能用它进行真正的工作或创建新文件）。
|
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|
||||
### [guidetolinux6.jpg][13]
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|
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|
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|
||||
图 6： 可以完美地（可以这么说）用一个终端模拟器去工作。[已获授权][6]
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|
||||
记住，这并不是真实的成熟终端，但却是一个新用户去熟悉终端是怎么工作的一种方法。遗憾的是，大多数用户只会发现自己对这个工具的终端功能感到沮丧，仅仅是因为，它们不能使用他们在其它节学到的东西。开发者可能将这个终端功能作为一个 Linux 文件系统沙箱去重新更新它，因此，用户可以真实地使用它去学习。每次用户打开那个工具，它将恢复到原始状态。这只是一个想法。
|
||||
|
||||
### 写在最后…
|
||||
|
||||
尽管终端功能被一个只读文件系统所限制（几乎到了没法使用的程序），Guide to Linux 仍然是一个新手学习 Linux 的好工具。在 guide to Linux 中，你将学习关于 Linux、命令、和 shell 脚本的很多知识，以便你安装你的第一个发行版之前，让你学习 Linux 有一个好的起点。
|
||||
|
||||
_通过免费的 Linux 基金会和 edX 的 ["Linux 入门"][16]课程学习关于 Linux 的更多知识。_
|
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|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: https://www.linux.com/learn/intro-to-linux/2017/8/guide-linux-app-handy-tool-every-level-linux-user
|
||||
|
||||
作者：[ JACK WALLEN][a]
|
||||
译者：[qhwdw](https://github.com/qhwdw)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
[a]:https://www.linux.com/users/jlwallen
|
||||
[1]:https://www.linux.com/licenses/category/used-permission
|
||||
[2]:https://www.linux.com/licenses/category/used-permission
|
||||
[3]:https://www.linux.com/licenses/category/used-permission
|
||||
[4]:https://www.linux.com/licenses/category/used-permission
|
||||
[5]:https://www.linux.com/licenses/category/used-permission
|
||||
[6]:https://www.linux.com/licenses/category/used-permission
|
||||
[7]:https://www.linux.com/licenses/category/used-permission
|
||||
[8]:https://www.linux.com/files/images/guidetolinux1jpg
|
||||
[9]:https://www.linux.com/files/images/guidetolinux2jpg
|
||||
[10]:https://www.linux.com/files/images/guidetolinux3jpg-0
|
||||
[11]:https://www.linux.com/files/images/guidetolinux4jpg
|
||||
[12]:https://www.linux.com/files/images/guidetolinux-5-newjpg
|
||||
[13]:https://www.linux.com/files/images/guidetolinux6jpg-0
|
||||
[14]:https://www.linux.com/files/images/guide-linuxpng
|
||||
[15]:https://play.google.com/store/apps/details?id=com.essence.linuxcommands
|
||||
[16]:https://training.linuxfoundation.org/linux-courses/system-administration-training/introduction-to-linux
|
||||
[17]:https://www.addtoany.com/share#url=https%3A%2F%2Fwww.linux.com%2Flearn%2Fintro-to-linux%2F2017%2F8%2Fguide-linux-app-handy-tool-every-level-linux-user&title=Guide%20to%20Linux%20App%20Is%20a%20Handy%20Tool%20for%20Every%20Level%20of%20Linux%20User
|
||||
Reference in New Issue
Block a user