I had to do this type of work frequently at an old job. We'd built short-run software systems for clients. Often this resulted in one-off data loads or reporti

I had to do this type of work frequently at an old job. We'd built short-run software systems for clients. Often this resulted in one-off data loads or reporting metrics. It was almost always easier just to knock something out with command line tools than it was to write, test, and deploy code. The deployment process itself could take longer than actually processing the file.