16.03.18 the use of "practice" case Write a script

Write a script that can combine the options and parameters, then get each option, and the parameters of the options, and can be based on options and parameters to make a specific operation, such as :adminusers.sh--add Tom,blair- -del Tom,blair-v|--verbose-h|--help

#!/bin/bash

#

Debug=0

Add=0

Del=0

For i in ' seq 0 $# '; Do

If [$#-gt 0]; Then

Case $ in

-v|--verbose)

Debug=1

shift;

-H|--HELP)

echo "Usage: ' basename $--add user_list--del user_list-v|--verbose-h|--help"

Exit 0;;

--add)

Add=1

Adduser=$2

Shift 2;;

--del)

Del=1

Deluser=$2

Shift 2;;

*)

echo "Usage: ' basename $--add user_list--del user_list-v|--verbose-h|--help"

Exit 7;;

Esac

Fi

Done

If [$ADD-eq 1]; Then

For USER in ' echo $ADDUSER | Sed ' s#,# #g '; Do

If ID $USER &>/dev/null; Then

[$DEBUG-eq 1] && echo "$USER exists"

Else

Useradd $USER

[$DEBUG-eq 1] && echo "ADD user $USER finished"

Fi

Done

Fi

If [$DEL-eq 1]; Then

For USER in ' echo $DELUSER | Sed ' s#,# #g '; Do

If ID $USER &>/dev/null; Then

Userdel-r $USER

[$DEBUG-eq 1] && echo "Delete $USER finished"

Else

[$DEBUG-eq 1] && echo "$USER NOT EXISTS"

Fi

Done

Fi

16.03.18 the use of "practice" case Write a script