Staylias makes your aliases persist across bash sessions

.bash_stalias

# Staylias makes your aliases persist across bash sessions.
# To install, save this as .bash_staylias in your home dir add this line to your bashrc:
#   source "$HOME/.bash_staylias"
#
# How to use:
#   $ alias foo=bar
#   $ alias foo
#   alias foo=bar
#  
#   $ alias foo=baz
#   foo exists, `alias -f ...` to save
#   $ alias -f foo=baz
#   foo overwritten
#   $ alias foo
#   alias foo=baz
#  
#   $ unalias foo
#   $ alias foo

stayliasfile=$(realpath ${BASH_SOURCE[0]})
alias() {
	touch "$stayliasfile" || return
	case $# in
		0)
			echo 'usage: alias [-f] KEY=VAL'
			return
			;;
		1)
			;;
		*)
			if [[ $1 == "-f" ]]; then
				force=1
				shift
			elif [[ ${1:0:1} == "-" ]]; then
				echo 'usage: alias [-f] KEY=VAL'
				return
			fi
			;;
	esac
	keyval="$*"
	key="${keyval%%=*}"
	val="${keyval#*=}"
	if [[ -z $key || -z $val ]] || echo $keyval | grep -qv '='; then
		grep "^builtin alias $key=" "$stayliasfile" | sed -e 's/^builtin alias //'
		return
	fi
	if [[ -z $force ]] && grep -q "^builtin alias $key=" "$stayliasfile"; then
		echo "$key exists, \`alias -f ...\` to save"
		return
	fi
	sed -i -e "s/^builtin alias $key=.*//" "$stayliasfile"
	echo "builtin alias $key=$val" >> "$stayliasfile"
	builtin alias $key=$val
	[[ -n $force ]] && echo "$key overwritten"
}

unalias() {
	key="$*"
	sed -i -e "s/^builtin alias $key=.*//" "$stayliasfile"
	builtin unalias $key
}

# ALIASES WILL BE ADDED BELOW HERE