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The query actually shows a lack of confidence. He should have googled "How to recover a file from /dev/null?" instead.
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Can you not just try it with a dummy folder??
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- Stack Overflow
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Top voted answer
"Why would you want to?"
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"... you don't. You recover it from /dev/random. Eventually."
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And if really want quality recovery,
/dev/urandom. Might take a bit longer, but it's worth the wait 👌.
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Duh, just read it back from
/dev/randomYou will recover the data, you just need to wait long enough.
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Patience is key.
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That hack Torvalds keeps denying my pull request to implement /dev/aether which would immediately begin overwriting the entire disk and all other mounted storage with the repeating content of whatever is moved there.
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That is... brilliant! I love it!
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Programmatically, what does the kernel actually do with data sent to /dev/null? Put it in a temp buffer and just delete it?
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I was also curious, here's a good answer:
https://unix.stackexchange.com/questions/670199/how-is-dev-null-implemented
The implementation is:
static ssize_t write_null(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { return count; } -
The syscall to write passes a buffer and length. If it is Dev null the call just returns without doing anything more.
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Programmatically, what does the kernel actually do with data sent to /dev/null?
I imagine it's like getting nullified in that olde show ReBoot.
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Permanently Deleted
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Why would you be trying to recover something from a virtual device?
