Could anyone help me with my little annoying problem?
I have to generate a 512 MB file made up with random data using DD. After some internet digging I found out that the command is:
Code:
dd if=/dev/urandom of=/exemple/file bs=512MB
After running this command the shell is not responding anymore, so I have to hit ctrl + z to end the process. Why does it freeze? I need to be able to run ps to see the dd's proces PID because meanwhile the dd is running, I have to check the progress using some strange command:
Code:
kill -USR1 `pidof dd`
If u did understend what I am talking about, cuz I am a bit confuse, please help me.
That thread is about files made up with zero. I need one with random data, using random/urandom, but still it helps. thanks
---------- Post updated at 07:16 PM ---------- Previous update was at 07:11 PM ----------
Anyway, could u tell me if it is suppose to freeze? When I execute
Code:
dd if=/dev/urandom of=file bs=1MB count=512
the bash freezez and after an certain amout of time it ends. The file is created 512MB, hurray.
But I have to run a signal during the DD process to check the progress. I searched on the internet and I found this signal for checking the progress:
Code:
kill -USR1 `pidof dd`
. But how I am supposed to check the DD pid and after to run this signal if the bash freezes after executing the dd line?
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