I am running the following command on an ubuntu system:
dd if=/dev/random of=rand bs=1K count=2
However, every time I run it, I end up with a file of a different size. Why is this? How can I generate a file of a given size filled with random data?
How can I use /dev/(u)random on Ubuntu or any *nix sistems ?
I searched at google but I can't find how to :(
I tried this but it says permission denied.
Note : I also tried as root.
/dev/(u)random
sudo /dev/(u)random
sudo -s;/dev/(u)random
Solution :
dd if=/dev/urandom of=~/urandom_test count=4 bs=1024
Hello everyone,
I'm having a little issue lately. I have flashed the rooted stock rom some times ago and there's something that happen at a random time. The phone simply shutdown.
This probably comes in the hasn't-he-got-anything-better-to-do category... :rolleyes:The cool random internet stuff thread now runs to 16 pages. Install this script, run it, and your browser should come up with one of the sites posted there, picked at random.
In my Apache configuration I have these lines:
SSLRandomSeed connect builtin
SSLRandomSeed connect file:/dev/random
SSLRandomSeed connect file:/dev/urandom 1024
How, exactly, does Apache interpret this? Does it first try builtin and then move to /dev/random if that fails? If it uses /dev/random and /dev/random runs out of entropy does it automatically switch to /dev/urandom?
I recently rooted my android and eventually ended up unrooting it because the phone sometimes would go into a boot loop after shutting itself off on its own. I have no idea why it happens and it's totally random. It usually happens every other day or so. I have to hold the PWR button when it's looping for it to actually turn on.
Does anyone know why it does this? Do I have to flash my phone?
I have a command that I want to have run again automatically each time it terminates, so I ran something like this:
while [ 1 ]; do COMMAND; done;
but if I can't stop the loop with Ctrl-c as that just kills COMMAND and not the entire loop.
How would I achieve something similar but which I can stop without having to close the terminal?
This is my first post in the Dani community. I am brand new to java, 5 weeks into an intro to computer programming course. My assignment is to create 10 random numbers between 50 and 100. Then I am supposed to sort them from lowest to highest, find the average and the max and min. I have got all but the sorting down.
I'm having random freezing issues on my hp dm1z. I can't seem to narrow them down to any particular process, but they happen once or twice a day, which basically makes the OS unusable. Often, the freeze is so severe that magic REISUB doesn't work, and I have to do a hard reset. Does anyone have any advice for tracking down the cause of this problem, or even solving it?
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