‘os/user’ package can be used to get the current user home directory

Let’s see a working code

Code

package main

import (
    "fmt"
    "log"
    "os/user"
)

func main() {
    user, err := user.Current()
    if err != nil {
        log.Fatalf(err.Error())
    }
    homeDirectory := user.HomeDir
    fmt.Printf("Home Directory: %s\n", homeDirectory)
}

Output

Home Directory: "some_home_directory"

The post Get Current User’s Home Directory in Go (Golang) appeared first on Welcome To Golang By Example.

func Chmod(name string, mode FileMode) error

Code

package main

import (
    "fmt"
    "log"
    "os"
)

func main() {
    err := os.Mkdir("new", 0755)
    if err != nil {
        log.Fatal(err)
    }
    stats, err := os.Stat("new")
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("Permission Folder Before: %s\n", stats.Mode())
    err = os.Chmod("new", 0700)
    if err != nil {
        log.Fatal(err)
    }
    stats, err = os.Stat("new")
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("Permission Folder After:  %s\n", stats.Mode())
}

Output:

Permission Folder Before: drwxr-xr-x
Permission Folder After:  drwx------

The post Change folder/directory permissions in Go (Golang) appeared first on Welcome To Golang By Example.

os.Mkdir() function can be used to create a directory or folder in go.

Below is the signature of the function.

func Mkdir(name string, perm FileMode)

It takes in two parameters

• The first parameter is the named directory. If the named directory is a fully qualified path it will create a directory at that path. If not it will create a directory with respect to current working directory

• The second parameter specifies the permission bits. The folder or directory is created with this permission bits

Code

package main

import (
    "log"
    "os"
)

func main() {
    //Create a folder/directory at a full qualified path
    err := os.Mkdir("/Users/temp", 0755)
    if err != nil {
        log.Fatal(err)
    }

    //Create a folder/directory at a full qualified path
    err = os.Mkdir("temp", 0755)
    if err != nil {
        log.Fatal(err)
    }
}

Output

It will create a directory temp at location /Users location and at the current working directory location

The post Create a directory or folder in Go (Golang) appeared first on Welcome To Golang By Example.

package main
import (
    "fmt"
    "log"
    "os"
)

func main() {
    currentWorkingDirectory, err := os.Getwd()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("Current Wroking Direcoty: %s", currentWorkingDirectory)
}

Output:

Current Working Direcoty: <will be current working directory on the machine>

The post Get Current Working Directory in Go (Golang) appeared first on Welcome To Golang By Example.

• If temp is a file output will be = “temp is a file”
• If temp is a directory output will be = “temp is a directory”

package main

import (
    "fmt"
    "log"
    "os"
)

var (
    fileInfo *os.FileInfo
    err      error
)

func main() {
    info, err := os.Stat("temp")
    if os.IsNotExist(err) {
        log.Fatal("File does not exist.")
    }
    if info.IsDir() {
        fmt.Println("temp is a directory")
    } else {
        fmt.Println("temp is a file")
    }
}

The post Check if file is a directory or not in Go (Golang) appeared first on Welcome To Golang By Example.

File Exists   

package main

import (
    "log"
    "os"
)

func main() {
    fileinfo, err := os.Stat("temp.txt")
    if os.IsNotExist(err) {
        log.Fatal("File does not exist.")
    }
    log.Println(fileinfo)
}

Folder Exists

package main

import (
    "log"
    "os"
)

func main() {
    folderInfo, err := os.Stat("temp")
    if os.IsNotExist(err) {
        log.Fatal("Folder does not exist.")
    }
    log.Println(folderInfo)
}

The post Check if a file or directory exists in Go (Golang) appeared first on Welcome To Golang By Example.