Comment by smegsicle

a good idea, some notes:

1. 10,000 isn't 'huuuuge' for long lived workstations, but 100k ought to be good for a while (bash, but not zsh, allows disabling truncation entirely with SAVEHIST=-1)

2. if using bash, make sure that this init stuff is sourced by both login and non-login shells (from ~/.bash_profile vs ~/.bashrc respectively)

3. specifying a non-default HISTFILE near your SAVEHIST (as shown in that zshrc link) can go a long way toward avoiding an improperly-configured shell truncating your huge history log, eg point 2