du is the abbreviation of Disk Usage , used to view the disk space. Unlike the df command, the du command looks at the disk space used by files and directories, not a partition.
Syntax format: du [parameter] [file]
Common parameters:
Example
# 显示指定文件所占空间du -sh file
# 显示文件夹内所有文件大小du -sh dir
# 显示文件夹内所有文件的大小du -ah dir/
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