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命令补全和别名-菜鸟的成长之路
source link: http://blog.51cto.com/12777709/2084035
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tab键，敲一下，敲两下Centos6支持命令补全，但是不支持参数补全在Centos7里不光支持命令补全，还支持参数补全。默认是不支持的，我们需要安装软件#yuminstall-ybash-completion安装好后，需要重启系统，才能生效alias创建别名aliasabc=‘cat/etc/password’取消别名unaliasabc这样的话只是零时的，如果想永久性需要添加到配置文件当中~/
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