Day04_vim Editor and Hard drive operation

I. Creating and editing body files with the VI editor

1. VI Editor Mode of operation
   • Command-line mode
     
   • Edit mode
     
   • Extended mode
     
2. Not finished finishing

Two. Hard disk partitioning, formatting, and management of file systems (i)

2. Classification of hard disk partitions: primary, extended, and logical partitions, with up to 4 primary partitions on one hard disk
   • fdisk: Create a disk partition and intelligently identify the disks below 2T
     • d: Delete A (already existing) partition
       
     • l: List the types of partitions (already existing)
       
     • m: List all commands used in Fdisk
       
     • n: Add a new partition
       
     • P: List The contents of a partitioned table
       
     • q: Quit Fdisk, but do not store changes
       
     • T: Change the ID of the partition system
       
     • W: Exit Fdisk and store the changes
       
   • partprobe: Re-initializes the partition table of the in-memory kernel.
     
4. Create a file system (data management)
   • file System : A file system is the method and data structure used by the operating system to identify files on a disk or partition; that is, how to organize files on disk
     
   • ext2: Standard file system in Linux systems
     
   • ext3: A log-file system
     
   • EXT4: An extended journaled file system for EXT3 systems
     
   • LVM: Logical Disk Volume management
     
   • iso9660: The only universal Disc File system available
     
6. formatting commands
   • mkfs. File system type : For example MKFS.EXT4/DEV/SDB1, format the partition/dev/sdb1 as a EXT4 file system
     
8. Set label (partition name)
   • E2label: Set or view the label name of a device, such as E2LABEL/DEV/SDB1, to view the label of a/DEV/SDB1 partition
     
   • E2LABEL/DEV/SDB1 WG: Set the label of the/DEV/SDB1 partition to WG

Three. Hard disk partitioning, formatting, and management of file systems (ii)

1. File system mount and unload: Mount refers to a device (usually a storage device) attached to an existing directory
   • Mount: Implement file system mounts, such as MOUNT/DEV/SDB1/WG to mount the/DEV/SDB1 partition to the/WG directory
     
   • umount: Implementation of file System uninstallation
     
2. Hard links, soft links
   • Symbolic (soft) Link : A symbolic link is a file that points to another file
     • LN: A soft link to create a link between different drive characters
       For example Ln–s wolf/dog.wolf.baby bodydog/dog_ wolf.boy, create a Wolf/dog.wolf.baby dog_ symbolic link for the Wolf.boy file and place it in the Bodydog directory
       
   • Hard link : **ln source file Shortcut file
     
   • Hard links to Inode numbers cannot be deleted across partitions can delete source files read Shortcut files * *
     
   • Check disk space DF
     • -A: Show all disks
       
     • - H: unit conversion
       
     • - T: Displays the type of file system
       
   • du: Displays only the directory size of subdirectories below the current directory and the total size of the current directory, a h ibid.
     
   • Innode Storing file information

Day04_vim Editor and Hard drive operation