shell function return

1) Unix command: Although any Unix command can be used in shell scripts, some more common commands are used. These commands are usually used for file and text operations. Common command syntax and functions: Echo"Some text": print the text on

function allows us to divide a complex function into several modules, which makes the program structure clearer and the code reuse more efficient. Like other programming languages, the Shell supports functions as well. The Shell function must be

Shell basic syntax Basic shell Syntax:Like advanced programming languages, shell also provides instructions and functions for using variables.For shell, the value of all variables is a string, and the shell program uses $ VaRReference the value

First, define the shell function (define functions) Grammar: [Function] funname [()]{Action[Return int;]} Description 1, can be defined with function fun () or directly fun (), without any parameters.2, the parameter returns, may display adds:

function allows us to divide a complex function into several modules, which makes the program structure clearer and the code reuse more efficient. Like other programming languages, the Shell supports functions as well. The Shell function must be

--book author Shenmon reprint please specify the source Content Introduction Objective What is a shell? Our first shell script Run the shell script Summarize Part V Third lesson preview: variable in hand, shell not

1. What is a shell script?It is a scripting language, not a programming language.You can use some logical judgments, loops, and other syntax.You can customize the sub-function, which is a collection of system commands.Shell scripts enable automated

There are multiple shells in Linux, where Bash is used by default. This chapter describes how shell works, shell types, General Shell operations, and bash features. Shell is the interface between the user and the Linux operating system. There are

Shell is the interface between the user and the Linux operating system. There are multiple shells in Linux, where Bash is used by default. This chapter describes how shell works, shell types, General Shell operations, and bash features. Shell is the

The Shell also supports functions. The Shell function must be defined before use.The Shell functions are defined in the following format:Function_name () { List of commands [return value]}If you prefer, you can also add keyword functions to