what is disk space usage

Linux commands-linux File and permission management commands-linux permission management 1. ubuntu tips: In ubuntu, you can press ctrl + alt + t to open the terminal, and press ctrl + shift + t to open the second terminal. Adjust the font in ubuntu

Authoritative guide to Common commands in Linux and Common commands in linux 1 online query and help commands (2)1. manman [Option] [command]: View Command help, command dictionary, more complex info, but not commonly used. # Man cd-A: displays all

Liunx disk management Command records and liunx disk Command records   Linux disk management is directly related to the performance of the entire system. Linux disk management commonly uses three commands: df, du, and fdisk. Df: list the total

The following describes how to add a disk to an Oracle ASM disk on the Linux platform. 1. Operating System settings 1. Map the storage disk to the server, restart and scan the disk. /Opt/D */bin/dlnkmgr view-lu 2. After scanning a new disk (both

  Overall structure of the Oracle database   Database Structure In fact, I introduced the database structure in the previous article about tablespace, but the figure is just a simple hierarchy. This picture looks quite complicated, just

Windows supports both FAT32 and NTFS file systems. FAT32 is longer than compatibility, and NTFS is longer than system security. On the premise of meeting the application requirements, how can we set a file system to make full use of the features of

The following sections describe the software and hardware configurations used by the MSM testing team when setting up their testing lab environment. This example is an enterprise data center, just like the environment described in the Microsoft

SpacesnifferIs a disk space usage check tool running in windows. After opening,All kinds of oversized files are on the surface, andSpacesnifferYou can directly select the right-click windows menu, so that you can delete it directly (of course, you

1. for multiple keywords, the file organization is convenient and efficient () A. Ordered file B, inverted file C, hash file D, and B + tree index file There are four basic ways to organize files: sequential organization, index organization, hash

1. Deferred segment creation description Since Oracle 11.2.0.1, Oracle provides a new space allocation method: when creating a non-partition table, this table segment is not created immediately, instead, the segment is created only when the first

Structured File Storage Technology and Application SinceWindowsAfter the launch of the system,MicrosoftThe company has been committed to improving and adopting new file storage methods, of which structured storage is the most respected by Microsoft.

The Administrator of the SQL Server database often has a headache and the hard disk space is too small. He often needs to write a lot of queries to find out which tables and modes occupy a large amount of hard disk space, this allows regular

Compression command: *. Z compress program zookeeper case; *. Bz2 Bzip2 program zookeeper case; *. GZ gzip program upload history case; * The resources packaged by the. Tar program have not been deleted; * .Tar.gz tar program packaging example,

After running the topas command:   # Topas     The most comprehensive and dynamic operating system, and the convenient performance view is the topas command. The following uses the topas output as an example to briefly describe the performance

Io performance: In read operations, raid10 and RAID5 are equivalent. Raid-5 performs write operations on small data (such as small data smaller than each band) two reads, two writes, and two XOR operations are required. For a single user's write

Chapter 1 Basic Linux commands-file and directory operations 1. Use bash for Interaction Command completion, history, and keyboard shortcuts 2. file and directory operations CD, PWD, mkdir, rmdir, and touch (update the access and modification time

Reference: http://msdn.microsoft.com/zh-cn/express/ms187054.aspx   SQL Server 2008 books online (January 2009) How database snapshots work Database snapshots provide read-only and static views of the source database when

Purpose: use shell scripts to check whether the database is running hourly and send an email alert when the database is down. 1. Check if Sendmail is running Service Sendmail status If it is not running, start or install it. For Linux 6, check

There are many file systems on the computer, but they can all be abstracted into four major components: boot block, super block, index node, and data zone. 12, 16, 32 in fat12, fat16, and FAT32 refer to the number of bits in the fat table (the

Backup and recoveryBackup and recovery are the basic requirements for ensuring business continuity when the media fails. The MySQL backup and recovery options depend heavily on the underlying table type. For example, both MyISAM and InnoDB tables