Report post #1 in What was the first language you actually wrote something useful in?

Not the first one you typed hello world in. The first one where the program did a job you needed done and you kept using it. For me it was a horrible little AWK script in about 1999 that reformatted my bank's statement export so I could paste it in a spreadsheet. I still have it somewhere. It has no comments and one variable called x2. Curious what everyone else's was.