There are more now not using glibc, such as Alpine Linux (which also uses busybox by default instead of many of the GNU utils). If you neither use glibc or gcc

There are more now not using glibc, such as Alpine Linux (which also uses busybox by default instead of many of the GNU utils). If you neither use glibc or gcc (say you use clang) you are getting a fair way away from the original GNU operating system.