# save history for multiple terminals
# create a folder to store the history
if [ ! -d "${HOME}/.bash_history_log" ]; then
    mkdir "${HOME}/.bash_history_log"
fi

# Add the tty to the history file
# Each terminal's history will be stored in
# its own file
if [ ! -z "${TMUX_PANE}" ]; then
	HISTSUFFIX=$(tmux display-message -p '#S#W' | sha256sum | cut -d' ' -f1)
else
	HISTSUFFIX=`tty | sed 's/\///g;s/^dev//g'`
fi
HISTFILE="$HOME/.bash_history_log/bash_history_$HISTSUFFIX"

# Time stamp for the history
HISTTIMEFORMAT="%y-%m-%d %H:%M:%S "

# don't put duplicate lines or lines starting with space in the history.
HISTCONTROL=ignoredups:ignorespace

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=1000
HISTFILESIZE=5000

# append to the history file, don't overwrite it
shopt -s histappend

# Add to the history everytime the prompt is shown
PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD/$HOME/~}\007";history -a'

# Search history
function searchhistory() {
    grep -ri "${1}" ~/.bash_history_log/*
}
alias shistory=searchhistory

# Thanks for that: https://dev.to/mrrcollins/saving-bash-history-across-terminals-b80