pkg syscall (freebsd-386-cgo), type Timeval struct, Usec int32
pkg syscall (freebsd-386-cgo), type WaitStatus uint32
pkg syscall (freebsd-386-cgo), var Stderr int
pkg syscall (freebsd-386-cgo), var Stdin int
pkg syscall (freebsd-386-cgo), var Stdout int
pkg syscall (freebsd-amd64), const F_DUP2FD_CLOEXEC = 18
pkg syscall (freebsd-amd64), const F_DUP2FD_CLOEXEC ideal-int

pkg os, var ErrExist error
pkg os, var ErrInvalid error
pkg os, var ErrNotExist error
pkg os, var ErrPermission error
pkg os, var Interrupt Signal
pkg os, var Kill Signal
pkg os, var Stderr *File
pkg os, var Stdin *File
pkg os, var Stdout *File
pkg os/exec, func Command(string, ...string) *Cmd
pkg os/exec, func LookPath(string) (string, error)
pkg os/exec, method (*Cmd) CombinedOutput() ([]uint8, error)