How to Run a Custom Shell Script During an XCODE Build

Right click on the specific target in XCODE



You can enter your shell script like this, here is a sample script to list available variables.



Build and Run and come open build results to see your script results.

Xcode
4 build setting variables for scheme scripts

转自:http://stackoverflow.com/questions/5319989/xcode-4-build-setting-variables-for-scheme-scripts

Apart from that, if you select "None", there will be a bunch of environment variables set by Xcode. You can discover all of them by doing something like 

printenv
> ~/Desktop/printenv.txt

 to have them dumped to a text file.

Some of the more useful environment variables include 

ARCHIVE_PATH

, 

SCHEME_NAME

, 

USER

,

ARCHIVE_DSYMS_PATH

, 

ARCHIVE_PRODUCTS_PATH

.