golang替换无法显示的特殊字符(\u0000, \000, ^@)

[root@vm010066016161 /root]
#cat /proc/45/cmdline
/usr/sbin/sshd-D
[root@vm010066016161 /root]
#cat /proc/45/cmdline -A
/usr/sbin/sshd^@-D^@
[root@vm010066016161 /root]
#cat /proc/45/cmdline | sed -n 'l'
/usr/sbin/sshd\000-D\000$
[root@vm010066016161 /root]

{"level":"info","ts":1650267870.4412727,"caller":"ssh/manager.Go:78","msg":"/usr/sbin/sshd\u0000-D\u0000"}

/usr/sbin/sshd-D

root         45      1  0 Jan12 ?        00:01:57 /usr/sbin/sshd -D

[]byte: [47 117 115 114 47 115 98 105 110 47 115 115 104 100 0 45 68 0]

    cmd := fmt.Sprintf("cat /proc/%s/cmdline", pid)
    cmdline, _, err := e.SSHManager.Run(cmd)
    if err != nil {
        e.logger.Error(fmt.Sprintf("pid(%s) CMDLine error[%s]", pid, err.Error()))
        return err
    }

    newByte := make([]byte, 0)
    for _, b := range []byte(cmdline) {
        if b == 0 { //小于32的字符都可以以这样的方式处理，本次只处理0
            newByte = append(newByte, 32)
        } else {
            newByte = append(newByte, b)
        }
    }
    newResult := strings.TrimSpace(string(newByte)) //结果的空格不需要

    // ...略
    newByte := bytes.ReplaceAll([]byte(cmdline), []byte{0}, []byte{32})
    newByte = bytes.TrimSpace(newByte)
    newResult := string(newByte)

    if len(newResult) > 64 {
        newResult = newResult[:64]
    }
    e.Pids[pid].CMDLine = newResult