Developer Tips and Tricks
 Adding third_party tarballs
Scenario: You want to add a new third_party lib tarball, however you don't have a full checkout of 'trunk/third_party'. You can use the following to just checkout the root directory w/o any files:
svn checkout svn+ssh://NERSC_NAME@portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/third_party/ --depth empty
Than add & commit. This is also useful for adding new data tarballs
 Searching for CLI Commands
 From outside of visit's cli
When franticly writing python code for VisIt, I often need to browse the list of functions available. But, output from 'dir()' from within a VisIt cli session is hard to sort through. The command below lists them in alphabetical order, one per line so it is much easier to find a method.
echo "dir()" | visit -cli -nowin -forceinteractivecli | tr ',' '\n' | tr -d " '" | sort
You can pipe it through grep if you're looking for something specific...
echo "dir()" | visit -cli -nowin -forceinteractivecli | tr ',' '\n' | tr -d " '" | grep Material DefineMaterialExpression GetMaterialAttributes GetMaterials ListMaterials MaterialAttributes SetDefaultMaterialAttributes SetMaterialAttributes TurnMaterialsOff TurnMaterialsOn
Also, if you need help on a specific CLI command but either are not currently running the cli or don't plan to keep it running...
echo "help(TurnMaterialsOff)" | visit -cli -nowin -forceinteractivecli
Place this function in ~/.visit/visitrc
def lsearch(pattern,echo=True,lst=globals()): rvals = None if not echo: rvals =  for v in lst: if not v.find(pattern) == -1: if echo: print v else: rvals.append(v) return rvals
And with in VisIt's cli you can simply type:
And any substring match is printed.
The function also returns a python list of all strings that matched:
for r in lsearch("Substring"): # do something