Clear history in ksh

Shell Programming and Scripting
1

Hi

Am using ksh shell

I need to remove history of commands used..

I tried

# rm .vi_history
# touch .vi_history
# chmod 600 .vi_history

This didnt work.. I tried also

# rm .sh_history
# touch .sh_history
# chmod 600 .sh_history

Even after this when i use the command

# history
465     vi .vi_history
466     rm .vi_history
467     touch .vi_history
468     chmod 6000 .vi_history
469     chmod 600 .vi_history
470     history

I need to delete all commands history that has been used so far..
Please help..:wall:

2

do you have -c option in history?
or just try..

 
>.sh_history
3

Don't use ksh but......

Google brought this up:-

Changing the size of the command history

You could set the size to 0, (zero).

4

Once you empty .sh_history, you need to open a new session to see the cleared history.

5

One wonders why you would need to do this. Are we covering up? All accounts should be personal rather than shared, so you know what you typed anyway.

Robin

6

I thought the same thing. The only reason why I think someone would want to do this (and I apologize if I'm making the wrong assumption here) is to clean after himself / herself after an intrusion. I repeat, I might be wrong, but...