Posted on July 21, 2018 at 3:05 pm
You can use OpenSSL to create a 1 GB random file in Linux:
openssl rand -out sample.txt -base64 $(( 2**30 * 3/4 ))
1 Gigabyte is like 230 bytes (you can use 10**9 for 109 bytes instead).
The “* 3/4” section is for base64 overhead, making the encoded output exactly 1 GB.
Another (slower) way is to use dd like this:
dd if=/dev/urandom of=file.ext bs=1G count=1
Probably would be better to use bs=64M count=16:
dd if=/dev/urandom of=sample.txt bs=64M count=16
It means 64MB multiplied for 16 times = 1024MB = 1GB.
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