preview_namelists is a script in CIMEROOT/scripts/Tools.
$ ./preview_namelists --help usage: preview_namelists [-h] [-d] [-v] [-s] [--component COMPONENT] [caseroot] Creates namelist and other model input files for each component (by running each component's buildnml script). Then copies the generated files to the CaseDocs subdirectory for inspection. It is not required to run this manually: namelists will be generated automatically when the run starts. However, this can be useful in order to review the namelists before submitting the case. case.setup must be run before this. Typical usage is simply: ./preview_namelists positional arguments: caseroot Case directory for which namelists are generated. 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/preview_namelists.log -v, --verbose Add additional context (time and file) to log messages -s, --silent Print only warnings and error messages --component COMPONENT Specify component's namelist to build. If not specified, generates namelists for all components.