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os: Mkdir can't add write permission to group/other user #15161

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math345 opened this issue Apr 7, 2016 · 1 comment

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math345 commented Apr 7, 2016

go version go1.5.1 linux/amd64
centos 7
go run xxx.go : success
ls -ll
drw-r--r-- 2 root root 4096 Apr 7 10:03 testdir

question: Mkdir failed to add write permission to group/other user. Why?

code:

package main

import (
    "fmt"
    "os"
)

func main() {
    savepath := "testdir"
    if err := os.Mkdir(savepath, 0666); err != nil {
        fmt.Println("mkdir(", savepath, ") error:", err)
    } else {
        fmt.Println("mkdir success:", savepath)
    }
}

Contributor

bradfitz commented Apr 7, 2016

See https://en.wikipedia.org/wiki/Umask

bradfitz closed this as completed

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