Linux查看磁盘信息、目录容量

显示磁盘剩余空间df(disk free)

$df -h
`NAME
df - report file system disk space usage

SYNOPSIS
df [OPTION]… [FILE]…

DESCRIPTION
This manual page documents the GNU version of df. df displays the amount of disk space available on the file system containing
each file name argument. If no file name is given, the space available on all currently mounted file systems is shown. Disk
space is shown in 1K blocks by default, unless the environment variable POSIXLY_CORRECT is set, in which case 512-byte blocks
are used.

   If an argument is the absolute file name of a disk device node containing a mounted file system, df shows the  space  available
   on that file system rather than on the file system containing the device node.  This version of df cannot show the space avail‐
   able on unmounted file systems, because on most kinds of systems doing so requires very nonportable intimate knowledge of  file
   system structures.

OPTIONS
Show information about the file system on which each FILE resides, or all file systems by default.

   Mandatory arguments to long options are mandatory for short options too.

   -a, --all
          include pseudo, duplicate, inaccessible file systems列出所有的文件系统
   -B, --block-size=SIZE
          scale sizes by SIZE before printing them; e.g., '-BM' prints sizes in units of 1,048,576 bytes; see SIZE format below

   --direct
          show statistics for a file instead of mount point

   --total
          produce a grand total

   -h, --human-readable
          print sizes in human readable format (e.g., 1K 234M 2G)

`

显示目录下的文件大小du(disk usage)

du -h [目录名]du

-h 可以以人性化的方式显示文件大小