Any frequently used command can appear in this file, freeing you from having to remember some incantation that does magic.

所有常用的命令都可以放在这个文件里，这样你就不必费心记住那些复杂的魔法咒语了。

youdao

Command substitution is used at the command line, but more frequently in scripting; you will learn more about it and scripting in later articles of this series.

可以在命令行上使用命令替换，但在脚本中使用它则更常见；您将在本系列的后续文章中更多地了解它和脚本。

youdao

Lsattr (used earlier to view the hardware parameters) is another command you will be using frequently to display statistics on your interfaces.

lsattr(稍后将用于查看硬件参数)是另一个常用于显示接口统计信息的命令。

youdao

In addition, the device's new gesture pad feature, called Quick Command, lets users quickly activate frequently used apps with the S Pen.

ENGADGET: Samsung Galaxy Note II unveiled: 5.5-inch HD Super AMOLED display, Android Jelly Bean and more S Pen functionality