type: txt
help: Set plain text password
syntax:expression: pattern $VAR(@) "^[^[:space:]]{1,16}$" ; "Password must be 16 characters or less"
commit:expression: $VAR(../md5/) == "" ; "md5 password already set"

update: vyatta-vtysh -c "configure terminal" -c "interface $IFNAME" \
          -c "ip rip authentication mode text" -c "ip rip authentication string $VAR(@)";

delete: vyatta-vtysh -c "configure terminal" -c "interface $IFNAME" \
          -c "no ip rip authentication mode" -c "no ip rip authentication string $VAR(@)";

comp_help: possible completions:
 <text>             Password (16 characters or less)