check space in unix

Http://casec12.javaeye.com/blog/523160 Today, I have finally figured out the origins and differences between carriage return and line feed.Before the computer appeared, there was a kind of device called teletype model 33, which can contain 10

Ken milberg, Writer/website expert, future tech January 04, 2010   UNIX History UNIXOriginated in the late 1960s S. Ken Thompson joined the Bell lab's computer research division in 1966. He was initially engaged in multicsProject, an

1. The CPU of the privileged        intel x86 architecture has a total of 0~4 four privileged levels, 0 highest, 3 lowest, and ARM architecture with different privilege levels. Each instruction on the hardware performs a corresponding check on the

I. INTRODUCTION Unix system, as a powerful multi-user time-sharing operating system, has been applied in more and more occasions, and the requirements of UNIX system management are more and more, but the current Books on UNIX system management

UNIX awk User Manual (version 2) Chi zhonglong Author's words: The UNIX awk User Manual was my work a few months ago. Looking back, this article is really rough, because I was too busy writing and uploading this work, without a good check on the

Article Title: UNIX: Cygwin on Windows. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Is Cygwin used for

Remember: the operations on the affected system may change the existing evidence or lead to the loss of sensitive information! {Initial response }} Objective: To obtain the loss-prone data in the system before judicial authentication and replication,

 Linux kernel space and user spatial information interaction methodThe author of this article :Kang Hua : Master of Computer Science, mainly engaged in the Linux operating system core, Linux technology standards, computer security, software testing

Unix SystemIn, some programs use the systemRootProcess running. These programs do not always have suid permission, because many of them only run by the root, the system administrator needs to know what these programs are doing and what other

References: Harley hahns: Guide to Unix and Linux, chap 24 -- The first key concept: the amount of "disk space" used by a file is not the same as the amount of data in the file. -- "Second, understand that there are two smallest space units in