Computer History Museum software curator Al Kossow has successfully retrieved the contents of the over-half-a-century old tape found at the University of Utah last month.… UNIX V4, the first ever ...

The ‘0~1000’ argument tells it to select each 1,000th line from the target file. The 0 tells it to start with line 0 which, of course, doesn’t exist, and the 1000 tells it how many lines to skip over ...