Some gems from my .profile on macOS

.profile

#
# Aliases
#
alias o="open ."
alias ..="cd .."
alias .="pwd"
alias c="clear"

alias sha1='openssl dgst -sha1'
alias sha256='openssl dgst -sha256'

# change the title of the Terminal window
alias title="printf '\033]0;%s\007'"

# display a notification center notification
function notify_fn(){
	text=$*
	osascript -e "display notification \"$text\" with title \"Notification\" sound name \"\""
}
alias notify=notify_fn

#
# Other stuff
#
export EDITOR="/usr/bin/nano"

# nice short PS1 with user and path
export PS1="\u@MBP:\w\$ "
# larger commandline history
export HISTFILESIZE=2000