How to remove an environment variable on OSX using bash I'm running under Snow Leopard 10.6.8 and I recently added an environment variable which it seems to be messing my bash terminal (I guess). 

What I did is add the variable DYLD_LIBRARY_PATH=/Library/PostgreSQL/9.2/lib to my .bash_profile file, which looks like this:

export PATH=/Users/Carlos/pear/bin:$PATH:/Users/Carlos/android-sdks/platforms:/Users/Carlos/android-sdks/platforms-tools:/Library/PostgreSQL/9.2/bin/
# Setting PATH for Python 2.7
# The orginal version is saved in .bash_profile.pysave
PATH="/System/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"
export PATH
export DYLD_LIBRARY_PATH=/Library/PostgreSQL/9.2/lib


And then run the command:

source ~/.bash_profile


So that now I can see the variable listed along with all the environment variables when I run "set" on the terminal.

The thing is I want to remove it. I've checked several forums and to be honest none of the solutions worked for me so far.
unset it

unset DYLD_LIBRARY_PATH


The bash reference manual says


  Once a variable is set, it may be unset only by using the unset builtin command.