#!/bin/sh HOST="hoge" DOMAIN="si-linux.co.jp" IPADDRESS="172.16.x.x" case "$1" in "-a" | "-s" | "-b" ) echo "$HOST" ;; "-i" ) echo "$IPADDRESS" ;; "-f" ) echo "$HOST.$DOMAIN" ;; "-d" ) echo "$DOMAIN" ;; *) echo "$HOST" ;; esac