Several functions like `is_file`, `is_dir` and others are documented in chapter 9 of the manual:
http://pike.lysator.liu.se/docs/man/chapter_9.html#9.1 But when I tried them they were not recognized. Finally I found out they are defined in the Stdio module: http://pike.lysator.liu.se/generated/manual/modref/ex/predef_3A_3A/Stdio.html#Stdio It was confusing because other functions and types documented in chapter 9 do include the `Stdio` module prefix. -- Marcos Cruz http://programandala.net
