CombinedOutput() fn from exec package does not seem to work, but the lower level StdoutPipe() and StdErrPipe() functions work
added struct for my tests
regex works for the first test case
 regex testing under way
changed description of setdir after talking with xiang and removed doubt about --ttl flag in mkdir after testing it out
finished writing test's for now. all pass
Merge branch 'testing' into refactoring