Shell Programming Basics Case Exercise

First, the grammar

 Case  inch  " content of the first variable "    # Each variable content is suggested in double quotation marks, the keyword is parentheses)    # execution content    ;;              # Use two consecutive semicolons to handle each category end!   " content of the second variable " )    # execution content    ;;   *)                # The last variable content will use * to represent all other values, but does not contain the contents of the first variable with the second variable contents of the other program run segment    # execution content    ;; Esac                 Case

Second, practice

1. Simulating Linux startup scripts
   

   status=0#0: Start;1: Stop Case " $" inch"Start")    Echo "* Program is running"  ;;"Stop")    Echo "* Stopping program"  ;;"Status")    Echo "* Program is running"  ;;"Restart")    Echo "* Stopping program"    Echo "* Program is running"  ;;*)    Echo "Plz input [Start|stop|status|restart]"   ;;Esac

   [Email protected]:~$./test. SH Start* program is running[email protected]:~$./test. SH Stop* stopping  program[email protected]:~$./test.  SH  Status* program is running[email protected]:~$./test. SH Restart* stoppingprogram * is running[email protected]:~$./test. SH Plz input [start|stop|status| Restart] [Email protected]:~$

Case exercises based on Shell programming