case.setup is a script in CIMEROOT/scripts/Tools.
$ ./case.setup --help usage: case.setup [-h] [-d] [-v] [-s] [-c] [-t] [-r] [-k KEEP] [caseroot] Creates various files and directories needed in order to build the case, create namelists and run the case. Any changes to env_mach_pes.xml and env_mach_specific.xml must be made before running this. This must be run before running case.build. To run this initially for the case, simply run: ./case.setup To rerun after making changes to env_mach_pes.xml or env_mach_specific.xml, run: ./case.setup --reset positional arguments: caseroot Case directory to setup. Default is current directory. options: -h, --help show this help message and exit -d, --debug Print debug information (very verbose) to file /home/titters/devel/E3SM/cime/master/scripts/Tools/case.setup.log -v, --verbose Add additional context (time and file) to log messages -s, --silent Print only warnings and error messages -c, --clean Removes the batch run script for target machine. If the testmode argument is present then keep the test script if it is present - otherwise remove it. The user_nl_xxx and Macros files are never removed by case.setup - you must remove them manually. -t, --test-mode Keeps the test script when the --clean argument is used. -r, --reset Does a clean followed by setup. This flag should be used when rerunning case.setup after it has already been run for this case. -k KEEP, --keep KEEP When cleaning/resetting a case, do not remove/refresh files in this list. Choices are batch script, env_mach_specific.xml, Macros.make, Macros.cmake. Use should use this if you have local modifications to these files that you want to keep.