https://www.zhihu.com/question/21418449Mort | Zsh vs. Bash: Incomplete contrast resolution (1) 2014-10-07BdpqlxzWhat's the difference between zsh and bash?A lot of people have written about "why zsh is better than bash", "Why zsh is better than
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First, everything is a string
Two, references and metacharacters
Three, where does the string come from, where to go
Four, plus a little bit of definition, you can push to export the entire Bash scripting language
Here's what bash is about, including Bash's color code, Bash's four-class files, how variables are handled in bash, array variables, the shell's procedural programming language, and some simple scripting examples.One, bash color display rules (color
Bash Shell and bashshellI,Terminal Printing
[Root @ cai ~] # Echo welcome to bash!
Welcome to bash!
[Cairui @ cai ~] $ Echo 'Welcome to bash! '
Welcome to bash!
[Cairui @ cai ~] $ Echo "welcome to bash \! "
Welcome to bash \!
(Note: special
1. What is shell?
In fact, I have heard of shell before I came into contact with Linux. At that time, I was talking about shell programming and I knew nothing about it. But surprisingly, I remember this term when my memory is really bad. Okay,
Xi. functionsThe shell function is defined by the description of the shell grammar above and holds a series of commands waiting to be executed later. When the shell function name is used as a simple command name, a series of commands associated with
5.2 Bash Variables
The following variables are set or used in Bash. Other shells generally do not process these variables.
Some variables used by Bash are also described in other chapters: for example, for variables used by tools for controlling
Summary of important Linux Knowledge & mdash; understand and learn about bash hardware, kernel, and shell. we must use shell to communicate the input commands with the kernel, so that the kernel can control the hardware to work correctly. The
In the previous paragraph, I said:
The true face of the so-called environment variable is actually an arbitrary string.
When Bash starts, it imports a string containing the = sign into its own variable in the Environ array.
Bash
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