I'm running a live distro in ram. I need to write a password to a file. Later, I need to delete it securely.
I don't know how live file systems work, so I'm unsure if I open the file for writing, then write over it with data the length of the password, if it actually will write over that exact memory location or not. The goal is to securely delete the file by writing over it.
I don't know if journaling happens in Live Linux distos. If so, is it possible to create a virtual file system in ram? I could then just write the password there and dd will securely write from beginnig to end of the volume.
What are my options?