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command_helper.go
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command_helper.go
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package command
import (
"bufio"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
)
func OnlyExec(cmdStr string) {
cmd := exec.Command("/bin/bash", "-c", cmdStr)
stdout, err := cmd.StdoutPipe()
if err != nil {
fmt.Println(err)
return
}
defer stdout.Close()
if err := cmd.Start(); err != nil {
fmt.Println(err)
return
}
if err := cmd.Wait(); err != nil {
fmt.Println(err)
}
}
func ExecResultStrArray(cmdStr string) []string {
cmd := exec.Command("/bin/bash", "-c", cmdStr)
stdout, err := cmd.StdoutPipe()
if err != nil {
fmt.Println(err)
return nil
}
defer stdout.Close()
if err = cmd.Start(); err != nil {
fmt.Println(err)
return nil
}
// str, err := ioutil.ReadAll(stdout)
networklist := []string{}
outputBuf := bufio.NewReader(stdout)
for {
output, _, err := outputBuf.ReadLine()
if err != nil {
if err.Error() != "EOF" {
fmt.Printf("Error :%s\n", err)
}
break
}
networklist = append(networklist, string(output))
}
if err := cmd.Wait(); err != nil {
fmt.Println(err)
}
return networklist
}
func ExecResultStr(cmdStr string) string {
cmd := exec.Command("/bin/bash", "-c", cmdStr)
println(cmd.String())
stdout, err := cmd.StdoutPipe()
if err != nil {
fmt.Println(err)
return ""
}
defer stdout.Close()
if err := cmd.Start(); err != nil {
fmt.Println(err)
return ""
}
str, err := ioutil.ReadAll(stdout)
if err != nil {
fmt.Println(err)
return ""
}
if err := cmd.Wait(); err != nil {
fmt.Println(err)
}
return string(str)
}
// 执行 lsblk 命令
func ExecLSBLK() []byte {
output, err := exec.Command("lsblk", "-O", "-J", "-b").Output()
if err != nil {
fmt.Println("lsblk", err)
return nil
}
return output
}
// 执行 lsblk 命令
func ExecLSBLKByPath(path string) []byte {
output, err := exec.Command("lsblk", path, "-O", "-J", "-b").Output()
if err != nil {
fmt.Println("lsblk", err)
return nil
}
return output
}
func ExecuteScripts(scriptDirectory string) {
if _, err := os.Stat(scriptDirectory); os.IsNotExist(err) {
fmt.Printf("No post-start scripts at %s\n", scriptDirectory)
return
}
files, err := os.ReadDir(scriptDirectory)
if err != nil {
fmt.Printf("Failed to read from script directory %s: %s\n", scriptDirectory, err.Error())
return
}
for _, file := range files {
if file.IsDir() {
continue
}
scriptFilepath := filepath.Join(scriptDirectory, file.Name())
f, err := os.Open(scriptFilepath)
if err != nil {
fmt.Printf("Failed to open script file %s: %s\n", scriptFilepath, err.Error())
continue
}
f.Close()
scanner := bufio.NewScanner(f)
scanner.Scan()
shebang := scanner.Text()
interpreter := "/bin/sh"
if strings.HasPrefix(shebang, "#!") {
interpreter = shebang[2:]
}
cmd := exec.Command(interpreter, scriptFilepath)
fmt.Printf("Executing post-start script %s using %s\n", scriptFilepath, interpreter)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
fmt.Printf("Failed to execute post-start script %s: %s\n", scriptFilepath, err.Error())
}
}
fmt.Println("Finished executing post-start scripts.")
}