histfile变量用来指定存储命令执行历史的文件；默认设置是 $HOME/.history。
The histfile variable lets the user specify the name of the file where the command execution history should be stored; the default is $HOME/.history.
历史应用程序(即很过时的遗留代码)有时会直接引用这些全局变量，但会在编译过程中产生错误，因为它们的声明并不一致。
Historical applications (that is, horribly outdated legacy code) sometimes refer to these directly, but produce errors during compilation because they're declared inconsistently.
历史上，很多攻击利用的是命令shell处理IFS环境变量的方法，但是当今大部分的shell(包括GNUbash)已经经过了修改，从而使IFS难以利用。
Historically, many attacks exploited the way the command shell handled the IFS environment variable, but most of today's shells (including GNU bash) have been modified to make IFS harder to exploit.
你只能使用不依赖于历史的，状态变量。
You can only use the state variables independent of history.
回顾了组织承诺研究的历史和现状，从组织承诺的定义、前因和后果变量、组织承诺的测量等几个方面进行了探讨。
Studies on the history and actuality about organizational commitment are reviewed. And the definition, variable of cause and effect are also discussed.
传统经济学把财富视为经济人效用函数的唯一变量，这早就受到历史学派和制度学派的批驳。
Traditional economics regards fortune as the only variable of utility function, which has been critiqued by new historical school and institutional economic school.
纵览这段历史进程，可以从中抽象出两个变量用来描述瑞士的联邦化道路：国家能力和集体认同。
Reviewing this history, two variables can be abstracted to describe the making of modern Switzerland: governmental capacity and collective identification.
纵览这段历史进程，可以从中抽象出两个变量用来描述瑞士的联邦化道路：国家能力和集体认同。
Reviewing this history, two variables can be abstracted to describe the making of modern Switzerland: governmental capacity and collective identification.
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