Increase Bash History Size

It is really convenient to use Ctrl+R to find often used commands.

If Bash history is not enough to save those commands, try to add ENV vairables below into .bashrc:

# amount of commands you want to store in .bash_history
export HISTSIZE=1000

# amount of commands you want to store in current bash session
export HISTFILESIZE=200000

Reference:

• bash HISTSIZE vs. HISTFILESIZE?
  https://stackoverflow.com/questions/19454837/