bash get first argument

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

1. Linux Scripting Basics 1.1 Basic Introduction to grammar 1.1.1 Start The program must start with the following line (must be on the first line of the file): #!/bin/sh The symbolic #! is used to tell the system that the parameters behind it

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

Transfer from http://blog.chinaunix.net/uid-20328094-id-95121.htmlA very good bash scripting tutorial, at least not in contact with bash can read!Create a scriptThere are many different shells in Linux, but usually we use Bash (Bourne again shell)

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,

sh,  resh,  ksh,  bash posix-compliant (korn/bourne-again) shell and command interpreter  command  synopsis description options and Invocation options bash Options Command Syntax command Execution word expansion directory

Basis Learn the basics of Bash. Specifically, enter man bash and browse at least the full text; it's simple and not long. Other shells may work well, but Bash is powerful and available in almost all cases (learning Zsh,fish or other shells is

Here is a bash script compilation tutorial written by old American. It is very good. At least I have never touched bash and can understand it!Create a scriptLinux has many different shells, but we usually use Bash (Bourne again shell) for shell

Ix. unfoldingThe expansion of the command line is done after splitting the word into words. There are seven types of expansion: curly brace expansion, wavy line expansion, parametric and variable expansion, command substitution, arithmetic expansion,

Bash is the Linux default shell, and Han O Sinox is also installed, although Sinox does not use bash by default, but the user may be compromised by a vulnerability once it is used, so it must be repaired quickly. Although Sinox uses FreeBSD's ports,