IsExitSignal returns a flag indicating whether a signal is SIGKILL, SIGHUP, SIGINT, SIGTERM, or SIGQUIT.

RegisterSignalHandler registers a SignalHandlerFunc.

TrapSignals tells the process to trap incoming process signals.

Arch is the uname OS-Arch string.

BuildType is the build type of this binary.

CommitSha32 is the long version of the commit hash from which this program was built.

CommitSha7 is the short version of the commit hash from which this program was built.

CommitTime is the commit timestamp of the commit from which this program was built.

Debug is whether or not the REXRAY_DEBUG environment variable is set to a truthy value.

DockerLegacyMode is true if Docker legacy mode is enabled.

SemVer is the semantic version.

SignalHandlerFunc is a function that can be registered with `core.RegisterSignalHandler` to receive a callback when the process receives a signal.