func init() { flag.Usage = func() { fmt.Printf(`Usage: %s [OPTION]... [FILE]... Concatenate FILE(s), or standard input, to standard output. `, flag.Program) flag.DBE() } flag.ProgVersion = "2.0" flag.Parse() // -vET if *all { *nonPrint = true *npTabs = true *npEnds = true } if *npEnds { *ends = true } if *blank { *number = true } if *npTabs { *tabs = true } if *all || *npEnds || *npTabs || *nonPrint { showNonPrinting = true } if !(*number || *ends || showNonPrinting || *tabs || *squeeze) { simple = true } }
func main() { flag.Usage = func() { fmt.Printf(`Usage: %s [OPTION]... Print certain system information. With no OPTION, same as -s. `, flag.Program) flag.DBE() } flag.ProgVersion = "1.1" flag.Parse() toprint := decodeFlags() if toprint == 0 { toprint = printKernelName } if toprint.isSet( (printKernelName | printNodeName | printKernelRelease | printKernelVersion | printMachine)) { name, err := genInfo() if err != nil { fatal.Fatalln("cannot get system name") } if toprint.isSet(printKernelName) { print(name.sysname) } if toprint.isSet(printNodeName) { print(name.nodename) } if toprint.isSet(printKernelRelease) { print(name.release) } if toprint.isSet(printKernelVersion) { print(name.version) } if toprint.isSet(printMachine) { print(name.machine) } } if toprint.isSet(printProcessor) { element := unknown if toprint != maxUint || element != unknown { print(element) } } if toprint.isSet(printHardwarePlatform) { element := unknown if toprint != maxUint || hostOS != unknown { print(element) } } if toprint.isSet(printOperatingSystem) { print(hostOS) } os.Stdout.WriteString("\n") }