Disk Maintenance

In this case, the MIGRATELP command is your most trustworthy friend. When you encounter a failed disk or you need to migrate data from one disk to another, you can use the MIGRATEPV or create a mirrored copy, and you will not be restricted to one method. For the original volume group (VG), you may experience a factor (http://www.aliyun.com/zixun/aggregation/16557.html ">FAC ...) when adding a disk to VG.

Function Description: Change user identity. Syntax: su&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-FLMP] [--help] [--version] [-] [-c < directive] [-s <shell>] [User Account] Supplemental Note: SU allows users to temporarily change the identity of the login. Changes must be entered to change ...

Function Description: Display the program in a tree chart. Syntax: pstree&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-ACGHLNPUUV] [-H < Program identification Code] [< Program identification code >/< user name "] Supplemental Note: Pstree instruction with ASCII characters display tree structure, clearly express the phase between the program ...

Feature Description: Writes data from the memory buffer to disk. Syntax: sync&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [--help] [--version] Supplemental Note: In a Linux system, when the data needs to be stored in the disk, it is usually placed in the buffer, wait until the appropriate time to write to the disk, so as to improve the efficiency of the system execution. Parameters:   ...

Function Description: Establish ext2 file system. Syntax: mke2fs&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-CFMQRSVV] [B < block size] [F < discontinuous section size] [-i < byte] [-N <inode number ...

Function Description: Delete user account. Syntax: userdel&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-R] [User Account] Supplemental Note: Userdel can delete user account and related files. If you do not add a parameter, only the user account is deleted without deleting the associated file. Parameters:-F Deletes the user login directory and all files in the directory.

Function Description: Add the Slip interface to the standard input. Syntax: sliplogin&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [User name] Supplemental Note: Sliplogin can add slip interface to the standard input, the general Terminal line into slip connection. It is often used to create SLIP servers that allow remote computers to connect slip to the server. Sliplogin ...

Feature Description: Lists the current user information related to the previous login system. Syntax: last&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-adrx] [F < record file] [-n < show number of columns] [Account name ...] [Terminal number ...] Supplemental Note: Executes the last instruction separately, it reads the AT/V ...

Function Description: Start the system swap area (swap&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp;area"). Syntax: Swapon [-ahsv][-p < priority >][Devices] Supplemental Note: Linux system 5636.html "> Storage management must use the Swap area to establish virtual memory." &nb ...

Function Description: Check the file system and try to fix the error. Syntax: fsck.ext2&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-acdffnprsstvvy] [B < zoning first magnetic field address] [B < block size] [-C < anti-narrator] [-i&nb ...

Function Description: Displays the System state. Syntax: procinfo&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-ABDDFHIMSSV] [F < output FILE] [-N < interval seconds] Supplemental Note: ProcInfo instructions from the/proc directory to read the relevant data, the data properly collated after the output to the target ...

Function Description: Deletes the program or work in execution. Syntax: kill&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-s < information name or number] Supplemental description of [program] or kill [-l < info]: Kill to send the specified information to the program. The preset information is sigterm (15 ...).

Function Description: Establish MS-DOS file system. Syntax: mkdosfs&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [CV] [F <fat Number] [F <FAT Record Unit] [-i < disk serial number] [-l < filename] ...

Function Description: System shutdown instructions. Syntax: shutdown&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-EFFHKNR] [t seconds] Time] [Warning message] Supplemental Note: Shutdown instructions can be closed all programs, and according to the needs of users, to reboot or shutdown action. Parameter:-C when executing "s ...

Feature Description: Displays the ID of the user and the ID of the group to which it belongs. Syntax: id&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-ggnru] [--help] [--version] [User Name] Supplemental Description: ID Displays the actual and valid IDs of the user and the group to which they belong. If the two IDs are the same, only the actual IDs are displayed. If you specify only the user name, the ID of the current user is displayed. ...

Function Description: Hard disk Grace Area tool program. Syntax: sfdisk&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-? tvx][-d < hard drive >][-g < hard drive >][-l < hard drive >][-s < partition >][-v < hard drive ...

Feature Description: Disk partitions. Syntax: fdisk&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [B < partition size] [-UV] [Peripheral code] or Fdisk [-l][-b < partition size >][-uv][peripheral device code ...]

Function Description: Display system information. Syntax: uhttp://www.aliyun.com/zixun/aggregation/11696.html ">name [-amnrsv][--help][--version] Supplemental Note: uname can display information about the computer and the operating system. 　Parameters:-A or--all displays all information. -M or--machine ...

Function Description: Set priority. Syntax: nice&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-N < priority] [--help] [--version] [Execute instruction] Add: The nice command can change the priority level of program execution. Parameter:</b-n< priority > or-...

Function Description: Replace the shell used when logging on to the system. Syntax: chsh&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-luv] [-S <shell name] [User name] Supplemental NOTE: Each user when logged into the system, will have a preset shell environment, this directive can change its default value. If you do not specify any parameters with the user ...