Update src/perturbIC.py

Co-authored-by: Davide Marchegiani <[email protected]>

Author: leoberhelman

src/perturbIC.py

@@ -30,6 +30,7 @@ def parse_args():
     parser.add_argument('ifile', metavar="INPUT_PATH", help='Path to the input file.')
     parser.add_argument('--validate', action='store_true',
         help='Validate the output fields file using mule validation.')
+    parser.add_argument('-o', '--output', dest = output_path, metavar="OUTPUT_PATH", help='Path to the output file. If omitted, the default output file is created by appending "_perturbed" to the input path.')
     args_parsed = parser.parse_args()
     return args_parsed