CheckDir is a function to check that a directory exists.

CheckExt is a function to check the extensions of a file.

CheckFile is a function to check that a file can be read.

CheckRequiredFlags is a function to check for required flags before running GROOT.

CheckSTDIN is a function to check that STDIN can be read.

ErrorCheck is a function to throw error to the log and exit the program.

PrintMemUsage outputs the current, total and OS memory being used.

StartLogging is a function to start the log...

Uint64SliceEqual returns true if two uint64[] are identical.