type: txt
help: Plain text password
syntax:expression: pattern $VAR(@) "^[^[:space:]]{1,8}$" ; "Password must be 8 characters or less"
val_help: Plain text password (8 characters or less)

update:vtysh -c "configure terminal" -c "interface $IFNAME" \
	 -c "no ip ospf authentication " -c "ip ospf authentication " \
	 -c "ip ospf authentication-key $VAR(@)"
delete:vtysh -c "configure terminal" -c "interface $IFNAME" \
	 -c "no ip ospf authentication " -c "no ip ospf authentication-key"