SYS document is a professional boot configuration files, It is mainly used for loading memory management, the setting is expanded memory and extended memory, loading the hardware driver, set the environment variable, for the normal user to use the computer to create the necessary environment for users (DOS era, proficient Config.
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Then click OK to set the environment variable.
然后单击“确定”，以设置此环境变量。
This assumes you're using a sh-family shell; in CSH, use setenv to set the environment variable CC.
这里假定您使用的是sh系列的shell；在csh中，用setenv来设置环境变量CC。
Simply set the environment variable at the start of the command line and the command you want to run.
只需要在启动命令行的时候设置环境变量以及您希望运行的命令即可。
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