test -add & -del & -h|--help & -v|--verbose

```
#!/bin/bash
#test -add & -del & -h|--help & -v|--verbose  etc
#lm
v=0
add=0
del=0
for i in `seq 0 $#`; do
   if [ $1 ]; then
      case $1 in 
	     -v|--verbose)
		             v=1
					 shift
				     ;;
		         -add)
				     add=1
					 addusers=$2
					 shift 2
					 ;;
			     -del)
				     del=1
					 delusers=$2
					 shift 2
					 ;;
			-h|--help)
			         echo "Usage:`basename $0` -v -add username1,username2..|-del username1,username2..|-h|--help"
					 exit 0
					 ;;
					*)
					 echo "Usage:`basename $0` -v -add username1,username2..|-del username1,username2..|-h|--help"					
					 exit 7
					 ;;
      esac
	else
	        break
    fi
done

echo "$v,$add,$del"

if [ $add -eq 1 ]; then
    for a in `echo $addusers |sed a@,@ @g`;do 
	     if `id $a &>/dev/null`; then
		     echo "$s is exists."
		 else 
		     [ $v -eq 1 ] && useradd $a
			 [ $v -eq 0 ] && useradd $a &>/dev/null
			 [ $v -eq 1 ] && echo $a |passwd --stdin $a 
			 [ $v -eq 0 ] && echo $a |passwd --stdin $a &>/dev/null
		 fi 
    done
	          exit 0
fi

if [ $del -eq 1 ]; then
    for b in `echo $delusers |sed s@,@ @g`; do 
	      if `id $b &>/dev/null`;then
		      userdel -r $b
			  [ $v -eq 1 ] && echo "$b is delete."
		  else 
		      echo "$b is not exists."
		  fi
	done
	           exit 0
fi 
```

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