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first command creates file with size of 10MB and not 1MB :~/prashant/test$ dd if=/dev/zero of=file_name.txt bs=1024k count=10 10+0 records in 10+0 records out 10485760 bytes (10 MB, 10 MiB) copied, 0.00991439 s, 1.1 GB/s :~/prashant/test$ du -h file_name.txt 10M file_name.txt :~/prashant/test$
637 B
637 B
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| Create a dummy file with a specific size |
How to create dummy files with a specific size using the "dd" command:
The "dd" command can be used to create a file of a specific size. This is useful if you would like to test download speeds, or any other tests, and need a file of a specific size.
dd if=/dev/zero of=file_name.txt bs=1024k count=10
This will create a file of 10MB called file_name.txt.
bs is your byte size and count represent the number of blocks. An easy way to look at is 1024K X 10.
Here is an even simpler way to create a 1MB file:
dd if=/dev/zero of=file_name.txt bs=1MB count=1