# History size
HISTSIZE=20000
HISTFILESIZE=40000

# Avoid duplicates
HISTCONTROL=ignoredups:erasedups

# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend

# After each command, append to the history file and reread it
PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; history -c; history -r"