My Attitude Toward Linux Shell

本文分享了一位耐心用户的Linux安装经历及学习Shell命令的心得。通过对比鼠标与键盘的操作效率,阐述了命令行的高效性。

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I must be an extremely patient user of Linux, for I have been trying to install all versions of Linux distributions lately, and getting used to the shell commands.

I also read some books on the subject. To be honest, it is true that the command lines are more efficient, and this can be verified by the following calculation:

Suppose a mouse have 3 keys, and the keyboard ten times more. The three key mouse can generate actions 3^2 when clicked 2 times, while the keyborad 30^2. Come on, no matter we clicked the keyboard or the mouse, we just clicked 2 times.

### Linux Shell Commands for Continuously Monitoring Serial Port Communication For continuously monitoring serial port communication on a Linux system, several tools and methods can be employed depending upon specific requirements such as real-time data viewing or logging purposes. One common method involves using `cat` combined with redirection operators to monitor raw output from the device file associated with the serial port: ```bash cat /dev/ttyS0 ``` This command reads directly from `/dev/ttyS0`, which represents one of the standard serial ports available under many Unix-like operating systems including Linux. However, this approach lacks advanced features like filtering or formatting messages[^3]. A more sophisticated solution would involve utilizing specialized software designed specifically for handling RS-232 communications over virtual terminals (TTYs). One popular choice is Minicom—a menu-driven program used primarily by developers working closely with embedded hardware platforms that require direct interaction through UART interfaces: To install minicom: ```bash sudo apt-get update && sudo apt-get install minicom ``` After installation, configure settings according to your needs via its setup interface (`minicom -s`) before starting interactive sessions at any time simply by invoking `minicom`. Another powerful tool worth mentioning here is `socat`. This utility allows bidirectional byte streams between two entities specified either explicitly within arguments passed during invocation or implicitly defined inside configuration files. For instance, setting up continuous listening mode targeting COM1 could look something similar to below example: ```bash socat READLINE /dev/ttyS0,b9600 ``` Here, `READLINE` provides line editing capabilities while specifying baud rate parameters ensures proper synchronization when exchanging information packets across physical links established between devices connected through respective endpoints represented symbolically above as TTY paths[^4]. Additionally, there exists an option called `screen`—a full-screen window manager capable not only managing multiple terminal windows but also supporting remote access functionality alongside other useful characteristics beneficial towards achieving objectives outlined initially regarding persistent observation activities concerning asynchronous bitstreams traversing along dedicated channels implemented physically within computer architectures based around contemporary POSIX-compliant kernels found widely deployed throughout modern server environments today. Using screen: ```bash screen /dev/ttyUSB0 9600 ``` In conclusion, various approaches exist catering differently toward individual preferences ranging from simple built-in utilities all way up until fully-fledged applications offering extensive customization options tailored specially addressing complex scenarios involving low-level I/O operations performed against peripheral units interfaced digitally via standardized protocols governing electrical signaling conventions adopted industry-wide since early days computing history began unfolding rapidly post-WWII era leading eventually into present-day landscape characterized prominently featuring open-source communities driving innovation forward relentlessly pushing boundaries ever further beyond previous limits set forth previously unimagined horizons now becoming reality thanks largely due contributions made countless enthusiasts worldwide collaborating together harmoniously sharing knowledge freely amongst peers alike striving collectively achieve greater good society overall[^5].
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