On Sun 14 Jan 2018 at 14:07:01 (+0100), Hans wrote: > Hi folks, > > try this: > > 1. login as normal user > > 2. become root with "su -"
… which reads ~/.bash_history into what I call the command recall buffer. > 3. delete history with "history -c" … which deletes all the entries in the recall buffer, those just read in and those commands typed since logging in. > 4. Check history, history is gone Presumably you mean you just tried to recall a command and failed. Make that command "ls -l ~/.bash_history" and you'll see the file is still there. > 5. logout from root by "CTL + D" or "exit" > > 6. relogin as root with "su -" … which reads ~/.bash_history. > 7. Check history, voila, it appears again. … as expected. > What is wrong? Distinguish between history list and history file. To eliminate your history, you need to remove/empty the file and also clear the list just before you logout. Cheers, David.
