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Clear history in ksh

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# 1  
Old 07-19-2013
Clear history in ksh
Hi

Am using ksh shell

I need to remove history of commands used..

I tried
Code:
# rm .vi_history
# touch .vi_history
# chmod 600 .vi_history

This didnt work.. I tried also
Code:
# rm .sh_history
# touch .sh_history
# chmod 600 .sh_history

Even after this when i use the command
Code:
# 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..Smilie
# 2  
Old 07-19-2013
do you have -c option in history?
or just try..

Code:
 
>.sh_history

# 3  
Old 07-19-2013
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  
Old 07-19-2013
Once you empty .sh_history, you need to open a new session to see the cleared history.
# 5  
Old 07-19-2013
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  
Old 07-19-2013
Quote:
Originally Posted by rbatte1
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
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...
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