Refresh Linux or Unix Path Environmental Variables with rehash刷新的Linux或Unix路径环境变数与翻版
If you have install new applications in Unix or Linux operating system, the rehash command can be used to recomputes the internal hash table of the contents of directories listed in the path environmental variable to account for new commands added.如果您有安装新的应用在UNIX或Linux作业系统，指挥的翻版，可以用来recomputes内部哈希表的内容，目录中所列的路径环境变量，以帐户为新的命令。
To use rehash command, simply called rehash at command line:使用命令的翻版，只是所谓的翻版，在命令行：
# rehash ＃翻版
rehash will update and refresh the OS’s path environmental variables to include the newly added and installed directories, thus enables users to call the functions and commands from any directory immediately without restarting the server.翻版将更新和刷新操作系统的路径环境变数，包括新增和安装目录，从而使用户能够呼叫的功能和命令，从任何目录立即重新启动服务器。
IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要说明 ：这是一个机器翻译网页是“按原样”提供的担保。 Machine translation may be difficult to understand.机器翻译可能很难理解。 Please refer to请参阅 original English article英文原版的文章 whenever possible.只要有可能。
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