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I need to create a text file which should contain random text data that can be read by human. I know that we can use /dev/urandom and /dev/random for getting random data. But it is not readable by humans. I need to create a file which contains random text format. Is there any way to do that?

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"Readable by humans" as in making actual sense? Full sentences? Or just some dictionary words? –  slhck Dec 23 '13 at 12:13

2 Answers 2

up vote 16 down vote accepted

We can do it by following command

base64 /dev/urandom | head -c 10000000 > file.txt

It creates a file with name file.txt size of 10 MB.

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Thanks! This works perfectly on OSX –  hanxue Jul 11 '14 at 4:20

get the output of:

tr -dc A-Za-z0-9 </dev/urandom 

and pipe it to a file.

You can use head command with -c or -n to limit the file size

example to generate a 1kB file a.txt:

tr -dc A-Za-z0-9 </dev/urandom | head -c 1024 > a.txt
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