osx-tabs.sh

function tabname {
  # Will use current dir name if called without arg.
  printf "\e]1;${1-$(basename `pwd`)}\a"
}
function winname {
  # Will use current dir name if called without arg.
  printf "\e]2;${1-$(basename `pwd`)}\a"
}
function tab {
  # Will cd into current dir if called without arg.
  osascript -e 'tell application "Terminal"' \
            -e 'tell application "System Events" to keystroke "t" using {command down}' \
            -e "do script \"cd `pwd` && cd ${1-.} && tabname && clear\" in front window" \
            -e 'end tell' > /dev/null
}
alias t='tab'
alias tn='tabname'
alias wn='winname'