shell script getopts

IntruductionShell scripts have two ways to locate script parameters, one is to use positional variables, and the second is to use getopts. There are two limitations to using positional parameters, and he needs the programmer to test the error

Getopts is a bash shell built-in command that parses a command-line pass in a shell script, passes it to a function, or passes it to a shell script that is passed to another call (option or parameter, which is explained later, getopts only supports

Bash Getopts-Allow your script to support command line parameters In the past, I always wanted to know how to create command line parameters for my Bash script. After searching, I found two functions that can solve this problem: the getopt function

getopts CommandUseProcesses command-line arguments and verifies valid options.Grammargetopts option string name [parameters ...]DescribeGetopts is designed to run in a loop, and each time a loop is executed, getopts checks the next command-line

The Bash shell provides a number of different ways to get data from users, including the following 3 methods: Command line arguments (data added in the back of fame) command-line Options (single letter with modifiable command behavior)

Encounter shell script need to collect parameter scene, with Getopts very convenientgetopts optstring name [arg ...] Example: Getopts "A:fs" OPTIONCommand Description:optstring lists all the parameters that the corresponding shell script can

In writing shell scripts, we often have to deal with some input parameters, it is more convenient to find getopts in the process, and can handle the parameters and parameter values of user input very well.Getopts is used to process user input

In writing shell scripts, we often have to deal with some input parameters, it is more convenient to find getopts in the process, and can handle the parameters and parameter values of user input very well.Getopts is used to process user input

The shell getopts and getopt usage 1.getoptsgetopts (shell built-in command) cannot directly handle long options (such as:--prefix=/home, etc.), Getopts has two parameters, the first parameter is a string, including characters and ":", each

Getopt/getopts: command line option/parameter processing in Bash 0. When writing a program, you must always process command line parameters. This article describes the command line Processing Method in Bash. Options and parameters: for example, the