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How Linux produces an empty file with a fixed length (for example, a file length of 1M) byte

Source: Internet
Author: User
Keywords Linux empty files fixed length
Tags aliyun empty files example file files how to html http
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How to produce an empty file with a fixed length (for example, a file length of 1M) byte, that is, the value of each byte is all 0x00.

DD If=/dev/zero of=/tmp/zero_file bs=http://www.aliyun.com/zixun/aggregation/12560.html ">1024 count=1024

Example：

[Root@localhost software]# dd If=/dev/zero of=/tmp/zero_file bs=1024 count=1024
Recorded 1024+0 read
Recorded 1024+0 's writing.
1048576 bytes (1.0 MB) replicated, 0.00645249 seconds, 163 mb/sec

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