Command Line Disk Space

The contents of this chapter take HP-UX as an example, and other operating systems may be different. Goal to complete this chapter, you can do the following: Describe the reason for disk partitioning use the whole disk to partition the disks describe the features and benefits of LVM define terms: Volume groups, logical volumes, and physical volumes, and explain the relationships between them. Create physical volumes on the command line, volume groups, and logical volume partitions each disk may have one or more partitions each partition can be used for:-A file system-swap space-raw data-...

In many cases, we want to know how much space the individual files and directories on the hard disk are using. And the total space occupied by a directory. The du command can help us. After we enter the terminal, we can use this command in any directory. Now use this command in the OPT directory of our own Linux system. We tried to enter the command: Du. In the figure above, we use the Red line to show the size of each file and directory that occupies the hard drive. The position of the green coil is relative to the name of each file and directory. And the position of the blue circle is the order of the current eye ...

Using Windows Http://www.aliyun.com/zixun/aggregation/15470.html ">vista after a while, we will find that the system disk space more and more tense, this time what should do?" 　　Reason analysis: Because the cache of the offline files in Vista system is kept in the system disk, so it is often get the system disk space tense by offline files. 　　WORKAROUND: Whenever you change the cached location of an offline file, the problem is solved. Specific ...

To prevent a user or group of users from consuming too much disk http://www.aliyun.com/zixun/aggregation/17325.html > storage space, you need to limit the available storage space for users or groups of users. Disk quotas are meant to force users to keep their system disk occupied for most of the time under the quota, and to eliminate their ability to use disk space indefinitely. In the Linux system, the quota is set on the file system, the file system needs to start before setting ...

The parted program makes it easy to manage and customize disk partitions, such as viewing existing partitioned tables, changing the size of partitions, deleting partitions, creating new partitions, and so on. &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; changing the system's hard disk partitions is a very dangerous thing, even for experienced system administrators, We still recommend that you make the necessary data backups before changing the disk partitions. About Disk Partitions ...

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Windows 9x and fat have a unique benefit: You can access all the hard drive content from the command line as long as you start the machine with a floppy disk. By the time the Windows NT/2K/XP, the default file system turned to NTFS, and this little trick is not going to work ...

Today, when you install CentOS 6.2, when you go to the test hard disk, always get through, the error is as follows: Disk SDA contains BIOS RAID metadata, but is isn't part of any recognized BIOS raid Sets. Ignoring disk SDA on the Internet to find a solution, after testing, finally is detected hard disk! can be installed next! Here to tell you the solution ...

"Lead" November 2012 a city subway line Line 1 opened operation so far, has become the most important travel vehicles, but with the increasing number of passengers, how to ensure the orderly operation of the subway in the case, to ensure the safety of passengers, but also become the focus of the subway management department. 　　Therefore, in the latest construction of metro line Line 4, a city subway again into the wave company, responsible for the subway police video surveillance, public security computer network system construction work, hope through the tide in the field of public security accumulation of experience, through the information means to maintain the public safety of the subway. With Metro safety ...

This paper is an excerpt from the book "The Authoritative Guide to Hadoop", published by Tsinghua University Press, which is the author of Tom White, the School of Data Science and engineering, East China Normal University. This book begins with the origins of Hadoop, and integrates theory and practice to introduce Hadoop as an ideal tool for high-performance processing of massive datasets. The book consists of 16 chapters, 3 appendices, covering topics including: Haddoop;mapreduce;hadoop Distributed file system; Hadoop I/O, MapReduce application Open ...

Swap space is a part of the system that is partitioned from the hard disk, and when physical memory (RAM) is filled, inactive pages in memory are moved to swap space. The size of the swap space is generally set to 1~2 times the physical RAM, but not more than http://www.aliyun.com/zixun/aggregation/9392.html ">2048MB." The swap space can be one or more dedicated swap partitions (recommended), can be one or more exchange files, or both ...