utils.hh currently contains a mix of pure functions (e.g. tokenizeString) and functions to deal with the operating system (file descriptors, filesystem, signals etc.). It is also quite large.

It should be split up by topic, and downstream files should only #include the pats they need.

See also #8901. I already started splitting it up in that, to avoid a sea of CPP. But the right order in which to do things is to split it up first.