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How to query disk in linux

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Jan 27, 2022 pm 03:56 PM

linux

In Linux, you can use the df command to query the disk. The function of this command is to display the file system disk usage statistics on the Linux system. When the parameter is set to "-h", the disk display format is easy Yes, the syntax is "df -h".

How to query disk in linux

#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

How to query the disk in Linux

The Linux df (full English spelling: disk free) command is used to display the current file system disk usage statistics on the Linux system.

Syntax

df [选项]... [FILE]...

File-a, --all Contains all file systems with 0 Blocks
File- -block-size={SIZE} Use {SIZE} size Blocks
file -h, --human-readable Use human-readable format (default value is not to add this Options...)
File -H, --si is like -h, but uses 1000 instead of 1024
File -i, --inodes List inode information, do not list used blocks
File -k, --kilobytes Just like --block-size=1024
File -l, --local Limit the listed file structures
File -m, --megabytes Like --block-size= 1048576
File--no-sync Do not sync before getting information (default value)
File-P, --portability use POSIX Output format
file--sync sync
file-t, --type=TYPE limit the list of file systems before obtaining information TYPE
File-T, --print-type Display the format of the file system
File-x, --exclude-type=TYPE Restrict listing of file systems to do not show TYPE
file -v (ignore)
##file --help Show this helper and exit
File --version Output version information and exit

Instance

Display disk usage statistics of the file system:

# df 
Filesystem     1K-blocks    Used     Available Use% Mounted on 
/dev/sda6       29640780 4320704     23814388  16%     / 
udev             1536756       4     1536752    1%     /dev 
tmpfs             617620     888     616732     1%     /run 
none                5120       0     5120       0%     /run/lock 
none             1544044     156     1543888    1%     /run/shm

The first column specifies the name of the file system, the second column specifies a specific file system 1K - blocks 1K is 1024 bytes of total memory. The used and available columns are in use, respectively, specifying the amount of memory.

Use columns to specify the percentage of memory used, while the last column "mounted on" specifies the mount point of the file system.

df can also display the file system information used by the disk:

# df test 
Filesystem     1K-blocks    Used      Available Use% Mounted on 
/dev/sda6       29640780    4320600   23814492  16%       /

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