Go Language Run shell command

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// go语言运行shell命令package mainimport (    "os/exec"    "fmt"    "os"    "strings")func main() {    var ip, whoami []byte    var err error    var cmd *exec.Cmd        // 执行单个shell命令时, 直接运行即可    cmd = exec.Command("whoami")    if whoami, err = cmd.Output(); err != nil {        fmt.Println(err)        os.Exit(1)    }    // 默认输出有一个换行    fmt.Println(string(whoami))    // 指定参数后过滤换行符    fmt.Println(strings.Trim(string(whoami), "\n"))        fmt.Println("====")        // mac平台获取ip地址    // 执行连续的shell命令时, 需要注意指定执行路径和参数, 否则运行出错    cmd = exec.Command("/bin/sh", "-c", `/sbin/ifconfig en0 | grep -E 'inet ' |  awk '{print $2}'`)    if ip, err = cmd.Output(); err != nil {        fmt.Println(err)        os.Exit(1)    }    fmt.Println(string(ip))    fmt.Println(strings.Trim(string(ip), "\n"))}

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