Go practiced hand OS file operation +os Package related

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If the file does not exist, create the file, and if it exists, continue writing the file

package wrigeFileimport (    "fmt"    "github.com/golang/glog"    "os")//注意OpenFile这个方法的第二个参数，一定要加上RDWR，可读可写的权限func writeFile(s string) {    file1, err := os.OpenFile("test.txt", os.O_CREATE|os.O_APPEND|os.O_RDWR, 0660)    if err != nil {        panic(err)    }    defer file1.Close()    if err != nil {        fmt.Println(file1, err)        return    }    glog.Infoln(s)    file1.WriteString(s)    file1.Sync()}

OS Package Related information:
http://blog.csdn.net/chenbaoke/article/details/42494851
Http://blog.chinaunix.net/uid-24774106-id-3993609.html
Http://www.widuu.com/archives/01/921.html