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This article is a cloud computing learning route tutorial code notes on case multi-conditional judgment syntax.

Case variable in

Mode 1)

Command sequence 1

Mode 2)

Command sequence 2

Mode 3)

Command sequence 3

11.*)

No matching post command sequence

13.esac

The first line: declare that the case keyword invokes the case syntax, followed by a "variable" that is generally the user's input value, and in represents a match from each pattern below

Lines 2-4: output or execution of commands after matching to "mode 1", mode 1: usually characters or numeric values

Lines 11-12: when the character entered by the user does not have a matching pattern, directly execute or print the command or statement under *)

Develop system tools

[root@bavdu shell_s] # vim system_tools

#! / usr/bin/env bash

#

Author: bavduEmail: bavduer@163.comGithub: https://github.com/bavduDate: 2019//

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