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docker -v: show version and build information without making remote connections

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This commit is contained in:
Solomon Hykes 2013-08-06 20:51:12 -07:00 committed by Jérôme Petazzoni
parent 9087ef9a77
commit 9fce6f662a
1 changed files with 9 additions and 0 deletions
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9
docker/docker.go
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@ -26,6 +26,7 @@ func main() {
return return
} }
// FIXME: Switch d and D ? (to be more sshd like) // FIXME: Switch d and D ? (to be more sshd like)
flVersion := flag.Bool("v", false, "Print version information and quit")
flDaemon := flag.Bool("d", false, "Daemon mode") flDaemon := flag.Bool("d", false, "Daemon mode")
flDebug := flag.Bool("D", false, "Debug mode") flDebug := flag.Bool("D", false, "Debug mode")
flAutoRestart := flag.Bool("r", false, "Restart previously running containers") flAutoRestart := flag.Bool("r", false, "Restart previously running containers")
@ -37,6 +38,10 @@ func main() {
flHosts := docker.ListOpts{fmt.Sprintf("unix://%s", docker.DEFAULTUNIXSOCKET)} flHosts := docker.ListOpts{fmt.Sprintf("unix://%s", docker.DEFAULTUNIXSOCKET)}
flag.Var(&flHosts, "H", "tcp://host:port to bind/connect to or unix://path/to/socket to use") flag.Var(&flHosts, "H", "tcp://host:port to bind/connect to or unix://path/to/socket to use")
flag.Parse() flag.Parse()
if *flVersion {
showVersion()
return
}
if len(flHosts) > 1 { if len(flHosts) > 1 {
flHosts = flHosts[1:] //trick to display a nice default value in the usage flHosts = flHosts[1:] //trick to display a nice default value in the usage
} }
@ -76,6 +81,10 @@ func main() {
} }
} }
func showVersion() {
fmt.Printf("Docker version %s, build %s\n", VERSION, GITCOMMIT)
}
func createPidFile(pidfile string) error { func createPidFile(pidfile string) error {
if pidString, err := ioutil.ReadFile(pidfile); err == nil { if pidString, err := ioutil.ReadFile(pidfile); err == nil {
pid, err := strconv.Atoi(string(pidString)) pid, err := strconv.Atoi(string(pidString))