This is a nifty little trick I swiped from a Stack Overflow question.
Basically it adds a command to run any command in a new tab of the same terminal window you are currently in.
For example, this:
$ tabdo cd /tmp
would launch a new tab, then navigate to /tmp.
To get this trick, just put this in your ~/.bashrc
tabdo () { /usr/bin/osascript 2>/dev/null <<EOF activate application "Terminal" tell application "System Events" keystroke "t" using {command down} end tell tell application "Terminal" repeat with win in windows try if get frontmost of win is true then do script "$@" in (selected tab of win) end if end try end repeat end tell EOF }
Here is a demo video, sorry it goes so fast, YouTube sped it up.