Used with flags -l (local) and -h (human), it will report back for local partitions in human readable format (MB/GB)

使用参数-l(本地)和-h，它可以可读格式(MB/GB)显示本地分区。

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(the ls and df commands also support -h for human-readable format.) Because pv now expects a specific number of bytes to transit through the pipe, it can render a true progress bar.

(ls和df命令也支持通过- h产生人可读的格式)。

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