How can I set the Mac OS X terminal history to act like linux when using up/down arrows?
Mark who commented on my questions above was correct. This is a bash setting. If you add the following to your ~/.bash_profile script, you will get this behavior.
HISTCONTROL=ignoredups
You can also ignore any lines that start with a space:
HISTCONTROL=ignorespace
Or do both, by using:
HISTCONTROL=ignoreboth
Assuming that you are using bash then
HISTCONTROL=ignoreboth
or
HISTCONTROL=ignoreboth:erasedups
in one of your bash rc file(s).