And i found you can do that by
HISTSIZE=10000

but I'm assming this will be lost after a reboot

where are the history variables set? (so i can change it perminantly)

HISTSIZE is environment variable. So you can do that in your profile. Depending on what shell you use.
~/.profile
or
~/.bash_profile
or
~/.zprofile

etc.

And dont forget to export this variable (like all other environmental variables) if you haven't looked on your profile yet do that. you'll figure that out.

also. I want to make a comment on the history. Quite a few of my friends are pretty paranoid people regarding the security of the boxes they own and run. When they all used bash some time ago. They used to symlink ~/.bash_history to /dev/null. Nowdays they all use Z shell (zsh) and in the login shell they run they unset $HISTFILE variable.
This gives you possibility to have history during the session but everything is gone after you logout.

Ok, i was considering putting it in .bashrc since all that sort of sutff is there, and I don't ahve a .bash_profile

But I figured it would be easier, so I created ~/.bash_profile
With
HISTSIZE=10000
export $HISTSIZE

And thanks, but I'm not paranoid...and i like having a lot of space, becuase I find i always forget how to do something, and it is already out of my history

Thanks

Tyir,
if you did not have .bash_prfile before in your $HOME please put in the beginning of ~/.bash_profile:

if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

you need this to source .bashrc and get all your aliases and functions.

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