Sometime you need to clear bash history for some reason like privacy or something else. Clearing bash history is pretty simple just run this command in your linux terminal
history -c
Or
rm ~/.bash_history
Prevent Saving History
You can add the command to your ~/.bash_logout so that history will get cleared everytime you logout from terminal
echo 'history -c' >> ~/.bash_logout
Finding Max History Can Be Stored
echo $HISTSIZE 1000
My history stored in ~/.bash_history file can hold up to 1000 last commands