Shell Programming (III)

Create a script admin.sh

Perform the following functions:

-H | --HELP: Providing Help information

--add users: Completing user additions

-del User | --delete: Complete User deletion

-V: Turn on debug mode, display information

You can use all of the above commands at the same time

#!/bin/Bash#debug=0ADD=0DELETE=0 forIinch`seq 1 $#` Do Case$1 inch-h|--Help )Echo "--v--help--add--delete--userlist"        ;;-v|--Versbo) DEBUG=1        Shift        ;;--add) ADD=1addusers=`Echo$2|sed '[email protected],@ @g'`        Shift 2        ;;-del|--Delete) DELETE=1deleteusers=`Echo$2|sed '[email protected],@ @g'`        Shift 2        ;;*)#       Echo 'Usage: ' basename $ '--add userlist--delete userlist --v|--verbose--help'# Exit7        ;;Esac Doneif[$ADD-eq1 ] Then         forUSERinch$ADDUSERS Do                if ID$USER &>/dev/NULL                 Then[$DEBUG-eq1] &&Echo "$USER is exists!"                Elseuseradd $USER [$DEBUG-eq1] &&Echo "$USER Add succefully!"                fi         Donefiif[$DELETE-eq1 ] Then         forUSERinch$DELETEUSERS Do                if ID$USER &>/dev/NULL                 ThenUserdel $USER [$DEBUG-eq1] &&Echo "$USER Delete successfully!"                Else[$DEBUG-eq1] &&Echo "$USER not exist!"                fi         Donefi

Shell Programming (III)