| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/docker/docker/pkg/stringid | Package stringid provides helper functions for dealing with string identifiers |
| github.com/docker/docker/pkg/system | |
| github.com/opencontainers/runc/libcontainer/label | |
| os | Package os provides a platform-independent interface to operating system functionality. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| syscall | Package syscall contains an interface to the low-level operating system primitives. |