作者简介 迈克尔·A. 帕尔默，东卡罗来纳大学历史学教授、海军史专家。

Commanders at sea struggle not only with the unpredictability of natural elements, but also with a shroud of uncertainty often referred to as the "fog of war". Over the centuries, most admirals yielded to the natural temptation to find in new technologies a means to assert centralized control over their forces. But other commanders have recognised the fog for what it is: a cons...(展开全部)

This book will take your Linux command-line skills to the next level so you can work faster, smarter, and more efficiently. If you’re like most Linux users, you learned your early command-line skills on the job, or by reading an intro book, or by installing Linux at home and just trying things out. I’ve written this book to help you take the next step—to build intermediate to a...(展开全部)

Software has replaced a diverse array of physical, mechanical, and electronic technologies used before 21st century to create, store, distribute and interact with cultural artifacts. It has become our interface to the world, to others, to our memory and our imagination - a universal language through which the world speaks, and a universal engine on which the world runs. What el...(展开全部)

杜黑1869年5月30日，杜黑出生于意大利南部那不勒斯以北23公里处一个名叫卡塞塔的小镇。他出身于军人世家，家中几代都为萨伏依王室服务。由于受家庭熏陶，杜黑自幼立志继承父业，从军习武。他先是进入都灵军事工程学校学习，由于学习刻苦，成绩优异，1888年毕业时，被直接授予炮兵中尉军衔，时年19岁。后来，杜黑又进入陆军大学学习，研究有关现代战争的战略战术以及战争中的后勤问题。毕业后，他被派到陆军许多岗位上工作。无论在哪里，他都致力于科学技术与军事应用相结合。深厚的科技知识和军事知识功底，使他工作成绩十分突出，很快就晋升为上尉，并调到陆军参谋部工作。20世纪初，他受命参加研究意大利军队的机械化问题，预见到飞机在军事上将有重大的作用，从此走上了一条探索研究空军理论的坎坷人生之路。 1903年12月17日，美国莱特兄弟在北卡罗来纳州的基蒂霍克首次驾驶一架有动力的...(展开全部)

The most basic interface to a computer—the command line—remains the most flexible and powerful way of processing data and performing and automating various day-to-day tasks. Command Line Fundamentals begins by exploring the basics, and then focuses on the most common tool, the Bash shell (which is standard on all Linux and iOS systems). As you make your way through the book, you'll explore the traditional Unix command-line programs as implemented by the GNU project. You'll also learn to use redirection and pipelines to assemble these programs to solve complex problems. By the end of this book, you'll have explored the basics of shell scripting, allowing you to easily and quickly automate tasks.

Many books have been written about strategy, tactics, and great commanders. This is the first book to deal exclusively with the nature of command itself, and to trace its development over two thousand years from ancient Greece to Vietnam. It treats historically the whole variety of problems involved in commanding armies, including staff organization and administration, communic...(展开全部)

简介：还是一样的简介

You've experienced the shiny, point-and-click surface of your Linux computer-now dive below and explore its depths with the power of the command line. The Linux Command Line takes you from your very first terminal keystrokes to writing full programs in Bash, the most popular Linux shell. Along the way you'll learn the timeless skills handed down by generations of gray-bearded,...(展开全部)

You've experienced the shiny, point-and-click surface of your Linux computer-now dive below and explore its depths with the power of the command line. The Linux Command Line takes you from your very first terminal keystrokes to writing full programs in Bash, the most popular Linux shell. Along the way you'll learn the timeless skills handed down by generations of gray-bearded,...(展开全部)