Games by id Software (the people who made, most famously, Quake and Doom) tend to be released in source code eventually, complete with GPL licensing.

id Soft ware(著名的Quake和Doom的开发人员)的游戏预计最终会发布源代码，并采用GPL授权方式。

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You can select or omit specific software, determine the file system layout, choose user ID authentication methods, and even set the root user's password.

可以选择或省略特定的软件、决定文件系统布局、选择用户ID身份验证方法，甚至设置根用户的密码。

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To see exceptions generated by using the improper mapping, create a database in the vender software of your choice, then set the current backend ID value as instructed above to the incorrect value.

为了看到使用不正确映射时抛出的异常，需要在您选择的厂商的软件上创建一个数据库，然后根据上面描述的把当前的后端 ID 设置为不正确的值。

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Id Software releases Doom, which pits a futuristic space marine against a hellish array of creatures.

FORBES: Never Enough

John Carmack, the videogame programmer and cofounder of id Software, has a rocketry startup called Armadillo Aerospace.

FORBES: On The Cover/Top Stories

In 1991 he and several friends formed Id Software, which went on to sell 10 million copies of Doom and Quake.

FORBES: Magazine Article