Usually when I find a command I want to alias, I echo it to my .bashrc like so:
[up button pressed to last command, then line edited so that it reads] $echo "command-i-just-did" >> ~/.bashrc
There may be a better way to do this. But anyway, just now I overwrote the entire .rc file by using a single chevron. However, since the .bashrc is still current, it's still accepting my old aliases (for now of course). So is there a way to recover it?