Cent OS 7.3利用cowsay实现动物欢迎语

首先安装fortune

sudo rpm -ivh fortune-mod-1.99.1-17.sdl7.x86_64.rpm 

提示缺少依赖

warning: fortune-mod-1.99.1-17.sdl7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 41a40948: NOKEY
error: Failed dependencies:
        librecode.so.0()(64bit) is needed by fortune-mod-1.99.1-17.sdl7.x86_64

安装依赖

sudo rpm -ivh librecode-3.6-alt11.1.1.x86_64.rpm 

提示

Preparing...                          ################################# [100%]
Updating / installing...
   1:librecode-3.6-alt11.1.1          ################################# [100%]

再安装fortune

sudo rpm -ivh fortune-mod-1.99.1-17.sdl7.x86_64.rpm 

提示

Preparing...                          ################################# [100%]
Updating / installing...
   1:fortune-mod-1.99.1-17.sdl7       ################################# [100%]

再安装cowsay

sudo rpm -ivh cowsay-3.04-4.el7.noarch.rpm 

提示

Preparing...                          ################################# [100%]
Updating / installing...
   1:cowsay-3.04-4.el7                ################################# [100%]

至此cowsay和fortune安装完成。

编写脚本

vi cowsay.sh

写去以下代码

#!bin/bash

# call cowsay after login
animal=$(ls /usr/share/cowsay | shuf -n 1)
declare -i name_length=${#animal}-4
# pass sentence to cowsay with random animal
echo Welcome XiaXingTao | cowsay -f ${animal:0:$name_length}

保存退出

最后将脚本文件拷贝到/etc/profile.d/目录下

cp cowsay.sh /etc/profile.d/

重新登录 大功告成

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