ex18.sh

BASH Shell 编程 经典教程 《高级SHELL脚本编程》中文版

#!/bin/bash
# ex18.sh

# 是否'whois domain-name'能够找到如下3个服务之一: 
#                    ripe.net, cw.net, radb.net

# 把这个脚本重命名为'wh', 然后放到/usr/local/bin目录下.

# 需要符号链接:
# ln -s /usr/local/bin/wh /usr/local/bin/wh-ripe
# ln -s /usr/local/bin/wh /usr/local/bin/wh-cw
# ln -s /usr/local/bin/wh /usr/local/bin/wh-radb

E_NOARGS=65


if [ -z "$1" ]
then
  echo "Usage: `basename $0` [domain-name]"
  exit $E_NOARGS
fi

# 检查脚本名字, 然后调用合适的服务.
case `basename $0` in    # Or:    case ${0##*/} in
    "wh"     ) whois $[e-mail];;
    "wh-ripe") whois $[e-mail];;
    "wh-radb") whois $[e-mail];;
    "wh-cw"  ) whois $[e-mail];;
    *        ) echo "Usage: `basename $0` [domain-name]";;
esac 

exit $?