如何在 palallel 中显示两个屏幕会话？

Question

有多种问题会导致观察到的行为。

首先，在源代码中，您已将终端输出缩进 8 个空格。此缩进会打印在文档中，因此会导致块向右移动。

您可以通过不缩进源代码来解决这个问题，即

\begin{tabular}[t]{ll}
Terminal 1 & Terminal 2\\[3mm]
    \begin{lstlisting}
root@vogon:~# mkfifo pipe
root@vogon:~# ls -l pipe
prw-r--r-- 1 root root 0 Aug 17 09:49 pipe
root@vogon:~# cat pipe
... waiting ...
    \end{lstlisting}

或者通过使用gobble列表中的键，从源中删除预定义数量的字符：

\begin{lstlisting}[gobble=8]

或者通过使用lstautogobble提供新列表键的包autogobble来自动删除所有空格。

\usepackage{lstautogobble}
% ...
\begin{lstlisting}[autogobble]

其次，表格位于新段落的第一行，因此表格将缩进。您可以使用以下命令关闭该功能\noindent：

prints out the text string, and cat terminates:

\noindent
\begin{tabular}[t]{ll}

或者不开始新的段落：

prints out the text string, and cat terminates:
\begin{tabular}[t]{ll}

第三，列表太宽。您可以将linewidth和一起设置breaklines，并可选地设置一个较小的breakindent和后中断符号：

\lstset{%
breaklines,
linewidth=0.4\textwidth,
postbreak=\mbox{\textcolor{blue}{$\hookrightarrow$}\space},
breakindent=5pt,
% ...

另外默认字体太大，您也可以设置：

\lstset{%
basicstyle=\scriptsize\ttfamily,
% ...

最后，在每个终端周围放置某种框架看起来更好：

\lstset{%
frame=shadowbox,
rulesepcolor=\color{gray!45},
% ...

完整代码：

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{listings}
\usepackage{lstautogobble}
\usepackage{xcolor}

\begin{document}

\subsubsection{Named pipes}

A named pipe has a p at the start of the line:

\lstset{%
basicstyle=\scriptsize\ttfamily,
autogobble,
breaklines,
linewidth=0.4\textwidth,
postbreak=\mbox{\textcolor{blue}{$\hookrightarrow$}\space},
breakindent=5pt,
frame=shadowbox,
rulesepcolor=\color{gray!45}
}
\begin{lstlisting}[linewidth=\textwidth]
    root@vogon:~# mkfifo pipe
    root@vogon:~# ls -l pipe
    prw-r--r-- 1 root root 0 Aug 17 09:49 pipe
\end{lstlisting}

As illustrated, named pipes are created with mkfifo - they can be used to communicate between processes; if a process opens the named pipe for reading, it will wait until another process writes into the pipe. The following shows how named pipes work, with two terminals open - first create the pipe in the left window and read from it with cat pipe - it just hangs, waiting for something to arrive; next write to the same pipe in the right window with echo "This is a test" > pipe - now the left window prints out the text string, and cat terminates:

\noindent\rule{\linewidth}{1pt}
\begin{tabular}[t]{ll}
Terminal 1 & Terminal 2\\[3mm]
    \begin{lstlisting}
        root@vogon:~# mkfifo pipe
        root@vogon:~# ls -l pipe
        prw-r--r-- 1 root root 0 Aug 17 09:49 pipe
        root@vogon:~# cat pipe
        ... waiting ...
    \end{lstlisting} & \\
    & \begin{lstlisting}
        root@vogon:~# echo "This is a test" > pipe
    \end{lstlisting} \\
    \begin{lstlisting}
        root@vogon:~# cat pipe
        This is a test
    \end{lstlisting} & \\[3mm]
\end{tabular}
\rule{\linewidth}{1pt}
\end{document}

请注意，我添加了\usepackage[T1]{fontenc}以确保>字符在 pdfLaTeX 中正确打印。

还要注意，阴影盒有一点点悬垂，我不确定该怎么办，但我认为它比非盒装版本更好。

结果：

Answer 1