mirror of
https://github.com/LCTT/TranslateProject.git
synced 2024-12-23 21:20:42 +08:00
hankchow translated
This commit is contained in:
HankChow
parent
1f062859fc
commit
09e347f7a1
@ -1,86 +0,0 @@
|
||||
HankChow translating
|
||||
|
||||
Ultimate Plumber – Writing Linux Pipes With Instant Live Preview
|
||||
======
|
||||
|
||||
|
||||
|
||||
As you may already know, **Pipe** command is used to send the output of one command/program/process to another command/program/process for further processing in Unix-like operating systems. Using the Pipe command, we can combine two or more commands and redirect the standard input or output of one command to another easily and quickly. A pipe is represented by a vertical bar character ( **|** ) between two or more Linux commands. The general syntax of a pipe command is given below.
|
||||
|
||||
```
|
||||
Command-1 | Command-2 | Command-3 | …| Command-N
|
||||
```
|
||||
|
||||
If you use Pipe command often, I have a good news for you. Now, you can preview the Linux pipes results instantly while writing them. Say hello to **“Ultimate Plumber”** , shortly **UP** , a command line tool for writing Linux pipes with instant live preview. It is used to build complex Pipelines quickly, easily with instant, scrollable preview of the command results. The UP tool is quite handy if you often need to repeat piped commands to get the desired result.
|
||||
|
||||
In this brief guide, I will show you how to install UP and build complex Linux pipelines easily.
|
||||
|
||||
**Important warning:**
|
||||
|
||||
Please be careful when using this tool in production! It could be dangerous and you might inadvertently delete any important data. You must particularly be careful when using “rm” or “dd” commands with UP tool. You have been warned!
|
||||
|
||||
### Writing Linux Pipes With Instant Live Preview Using Ultimate Plumber
|
||||
|
||||
Here is a simple example to understand the underlying concept of UP. For example, let us pipe the output of **lshw** command into UP. To do so, type the following command in your Terminal and press ENTER:
|
||||
|
||||
```
|
||||
$ lshw |& up
|
||||
```
|
||||
|
||||
You will see an input box at the top of the screen as shown in the below screenshot.
|
||||
|
||||
In the input box, start typing any pipelines and press ENTER key to execute the command you just typed. Now, the Ultimate Plumber utility will immediately show you the output of the pipeline in the **scrollable window** below. You can browse through the results using **PgUp/PgDn** or **Ctrl+ <left arrow)/Ctrl+<right arrow>** keys.
|
||||
|
||||
Once you’re satisfied with the result, press **Ctrl-X** to exit the UP. The Linux pipe command you just built will be saved in a file named **up1.sh** in the current working directory. If this file is already exists, an additional file named **up2.sh** will be created to save the result. This will go on until 1000 files. If you don’t want to save the output, just press **Ctrl-C**.
|
||||
|
||||
You can view the contents of the upX.sh file with cat command. Here is the output of my **up2.sh** file:
|
||||
|
||||
```
|
||||
$ cat up2.sh
|
||||
#!/bin/bash
|
||||
grep network -A5 | grep : | cut -d: -f2- | paste - -
|
||||
```
|
||||
|
||||
If the command you piped into UP is long running, you will see a **~** (tilde) character in the top-left corner of the window. It means that UP is still waiting for the inputs. In such cases, you may need to freeze the Up’s input buffer size temporarily by pressing **Ctrl-S**. To unfreeze UP back, simply press **Ctrl-Q**. The current input buffer size of Ultimate Plumber is **40 MB**. Once you reached this limit, you will see a **+** (plus) sign on the top-left corner of the screen.
|
||||
|
||||
Here is the short demo of UP tool in action:
|
||||
|
||||
|
||||
### Installing Ultimate Plumber
|
||||
|
||||
Liked it? Great! Go ahead and install it on your Linux system and start using it. Installing UP is quite easy! All you have to do is open your Terminal and run the following two commands to install UP.
|
||||
|
||||
Download the latest Ultimate Plumber binary file from the [**releases page**][1] and put it in your path, for example **/usr/local/bin/**.
|
||||
|
||||
```
|
||||
$ sudo wget -O /usr/local/bin/up wget https://github.com/akavel/up/releases/download/v0.2.1/up
|
||||
```
|
||||
|
||||
Then, make the UP binary as executable using command:
|
||||
|
||||
```
|
||||
$ sudo chmod a+x /usr/local/bin/up
|
||||
```
|
||||
|
||||
Done! Start building Linux pipelines as described above!!
|
||||
|
||||
And, that’s all for now. Hope this was useful. More good stuffs to come. Stay tuned!
|
||||
|
||||
Cheers!
|
||||
|
||||
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: https://www.ostechnix.com/ultimate-plumber-writing-linux-pipes-with-instant-live-preview/
|
||||
|
||||
作者：[SK][a]
|
||||
选题：[lujun9972][b]
|
||||
译者：[译者ID](https://github.com/译者ID)
|
||||
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.ostechnix.com/author/sk/
|
||||
[b]: https://github.com/lujun9972
|
||||
[1]: https://github.com/akavel/up/releases
|
||||
@ -0,0 +1,83 @@
|
||||
使用 Ultimate Plumber 即时预览管道命令结果
|
||||
======
|
||||
|
||||
|
||||
|
||||
管道命令的作用是将一个命令/程序/进程的输出发送给另一个命令/程序/进程，以便将输出结果进行进一步的处理。我们可以通过使用管道命令把多个命令组合起来，使一个命令的标准输入或输出重定向到另一个命令。两个或多个 Linux 命令之间的竖线字符（|）表示在命令之间使用管道命令。管道命令的一般语法如下所示：
|
||||
|
||||
```
|
||||
Command-1 | Command-2 | Command-3 | …| Command-N
|
||||
```
|
||||
|
||||
`Ultimate Plumber`（简称 `UP`）是一个命令行工具，它可以用于即时预览管道命令结果。如果你在使用 Linux 时经常会用到管道命令，就可以通过它更好地运用管道命令了。它可以预先显示执行管道命令后的结果，而且是即时滚动地显示，让你可以轻松构建复杂的管道。
|
||||
|
||||
下文将会介绍如何安装 `UP` 并用它将复杂管道命令的编写变得简单。
|
||||
|
||||
|
||||
**重要警告：**
|
||||
|
||||
在生产环境中请谨慎使用 `UP`！在使用它的过程中，有可能会在无意中删除重要数据，尤其是搭配 `rm` 或 `dd` 命令时需要更加小心。勿谓言之不预。
|
||||
|
||||
### 使用 Ultimate Plumber 即时预览管道命令
|
||||
|
||||
下面给出一个简单的例子介绍 `UP` 的使用方法。如果需要将 `lshw` 命令的输出传递给 `UP`，只需要在终端中输入以下命令，然后回车：
|
||||
|
||||
```
|
||||
$ lshw |& up
|
||||
```
|
||||
|
||||
你会在屏幕顶部看到一个输入框，如下图所示。
|
||||
|
||||
|
||||
在输入命令的过程中，输入管道符号并回车，就可以立即执行已经输入了的命令。`Ultimate Plumber` 会在下方的可滚动窗口中即时显示管道命令的输出。在这种状态下，你可以通过 `PgUp`/`PgDn` 键或 `ctrl + ←`/`ctrl + →` 组合键来查看结果。
|
||||
|
||||
当你满意执行结果之后，可以使用 `ctrl + x` 组合键退出 `UP`。而退出前编写的管道命令则会保存在当前工作目录的文件中，并命名为 `up1.sh`。如果这个文件名已经被占用，就会命名为 `up2.sh`、`up3.sh` 等等以此类推，直到第 1000 个文件。如果你不需要将管道命令保存输出，只需要使用 `ctrl + c` 组合键退出即可。
|
||||
|
||||
通过 `cat` 命令可以查看 `upX.sh` 文件的内容。例如以下是我的 `up2.sh` 文件的输出内容：
|
||||
|
||||
```
|
||||
$ cat up2.sh
|
||||
#!/bin/bash
|
||||
grep network -A5 | grep : | cut -d: -f2- | paste - -
|
||||
```
|
||||
|
||||
如果通过管道发送到 `UP` 的命令运行时间太长，终端窗口的左上角会显示一个波浪号（~）字符，这就表示 `UP` 在等待前一个命令的输出结果作为输入。在这种情况下，你可能需要使用 `ctrl + s` 组合键暂时冻结 `UP` 的输入缓冲区大小。在需要解冻的时候，使用 `ctrl + q` 组合键即可。`Ultimate Plumber` 的输入缓冲区大小一般为 40 MB，到达这个限制之后，屏幕的左上角会显示一个加号。
|
||||
|
||||
以下是 `UP` 命令的一个简单演示：
|
||||
|
||||
|
||||
### 安装 Ultimate Plumber
|
||||
|
||||
喜欢这个工具的话，你可以在你的 Linux 系统上安装使用。安装过程也相当简单，只需要在终端里执行以下两个命令就可以安装 `UP` 了。
|
||||
|
||||
首先从 Ultimate Plumber 的[发布页面][1]下载最新的二进制文件，并将放在你系统的某个路径下，例如`/usr/local/bin/`。
|
||||
|
||||
```
|
||||
$ sudo wget -O /usr/local/bin/up wget https://github.com/akavel/up/releases/download/v0.2.1/up
|
||||
```
|
||||
|
||||
然后向 `UP` 二进制文件赋予可执行权限：
|
||||
|
||||
```
|
||||
$ sudo chmod a+x /usr/local/bin/up
|
||||
```
|
||||
|
||||
至此，你已经完成了 `UP` 的安装，可以开始编写你的管道命令了。
|
||||
|
||||
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: https://www.ostechnix.com/ultimate-plumber-writing-linux-pipes-with-instant-live-preview/
|
||||
|
||||
作者：[SK][a]
|
||||
选题：[lujun9972][b]
|
||||
译者：[HankChow](https://github.com/HankChow)
|
||||
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.ostechnix.com/author/sk/
|
||||
[b]: https://github.com/lujun9972
|
||||
[1]: https://github.com/akavel/up/releases
|
||||
|
||||
Loading…
Reference in New Issue
Block a user