description: sddscombinelogfiles combines one-PV-per-file SDDS log files into a single
file, retaining only timestamps common to all inputs. Supports pipe output and overwriting
existing files.
-overwrite — Replaces the output file if it exists.
files: Input is one or more SDDS log files containing a single process variable each. Output is a
single SDDS file with only timestamps common to all inputs.