nixCraft

jaysunn · #1 (**permalink**) 01-09-2009, 11:16 PM

Hello Nixcraft,

I came across this command on the web and I thought I would share it with you all.

There has been times where I have accidentally copied a full page of text and pasted it into a bash terminal only to have a 100 command not founds.

Well were I work there are multiple admins that check the root bash history. I would not want them to see my rookie mistake. The resolution is to run this to exit bash without creating a command history.

Code:

Prompt>kill -9 $$

$$ gives the pid of the current bash instance, and the kill ends the process. There are ways to disable the history in BASH, but at my office we use the history to our advantage. So this can get you out of a jam.

Have fun.

HTH

Jaysunn

nixcraft · #2 (**permalink**) 02-09-2009, 02:13 AM

Also you can nuke history when you logout by adding the following to your ~/.bash_logout file:

Code:

# clear bash history
/bin/rm -f $HOME/.bash_history

# clear mysql history
/bin/rm -f $HOME/.mysql_history

jaysunn · #3 (**permalink**) 02-09-2009, 02:20 AM

SOOO Sweet,

However if everyone uses root, this will nuke all history? In my situation we are currently all using root as our login. And I am sure our company is not alone with this setup

In fact I am learning LDAP so we can all have individual logins for the root account.

My senior admin and I are testing this now.

Jaysunn

chimu · #4 (**permalink**) 02-09-2009, 02:24 AM

Share root account without a root password. sudo - Wikipedia, the free encyclopedia

kumarat9pm · #5 (**permalink**) 02-09-2009, 02:54 PM

we can set the HISTSIZE=0 which will clear all your history(only tat terminial)not for other terminials..
and then revert back the Value to some 100 or what ever you want
#HISTSIZE=100

Note for new babys:HISTSIZE is the variable where we can mention how many commands the history command should store.
if HISTSIZE=10, your history command will just show last 10 executed commands..

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nixCraft

Quit Bash Without Saving History

Quit Bash Without Saving History

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The Following 2 Users Say Thank You to nixcraft For This Useful Post:
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