差不多就是系统中每个命令的简单说明。看来比较实用。但是描述的内容是用英文写的，对于母语非英文的我来说，读起来太慢。那么，我们就调用翻译的API，将其顺便翻译成中文来阅读吧。由于机器翻译不太准确，那么我们就来个中英文对照吧。

这里，我们使用有道翻译API。

首先，百度搜索“有道翻译API”，找到“http://fanyi.youdao.com/openapi”，打开链接。

有账号的话，登录系统。没账号的话，申请一个再登录系统。

跳转到 https://ai.youdao.com/console/#/service-singleton/text-translation文本翻译。如果没有应用的话，创建一个应用。首次使用它，系统会送100元的时长，有效期1年。

右侧中部，各种代码编写的示例代码，这里我们选择C#，抄下来，修改这三个参数就可以用了。 appKey，appSecret ，来自于创建的应用。

			string q = "待输入的文字";
            string appKey = "您的应用ID";
            string appSecret = "您的应用密钥"

代码我修改了一下，将其封装成一个类，可以供接下来调用。

    public class YouDaoFanyiV3
    { 
         
        public YouDaoFanyiResult Trans(string query)
        { 
         
            Dictionary<String, String> dic = new Dictionary<String, String>();
            string url = "https://openapi.youdao.com/api";
            string appKey = "14b33f4513380000000";
            string appSecret = "xfACgC1jAAUx9T9n00000000";
            string salt = DateTime.Now.Millisecond.ToString();
            //dic.Add("from", "源语言");
            //dic.Add("to", "目标语言");
            dic.Add("signType", "v3");
            TimeSpan ts = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc));
            long millis = (long)ts.TotalMilliseconds;
            string curtime = Convert.ToString(millis / 1000);
            dic.Add("curtime", curtime);
            string signStr = appKey + Truncate(query) + salt + curtime + appSecret; ;
#pragma warning disable SYSLIB0021 // 类型或成员已过时
            string sign = ComputeHash(signStr, new SHA256CryptoServiceProvider());
#pragma warning restore SYSLIB0021 // 类型或成员已过时
            dic.Add("q", System.Web.HttpUtility.UrlEncode(query));
            dic.Add("appKey", appKey);
            dic.Add("salt", salt);
            dic.Add("sign", sign);
            //dic.Add("vocabId", "您的用户词表ID");
            var result = Post(url, dic);
            return JsonSerializer.Deserialize<YouDaoFanyiResult>(result);

        }
        private string ComputeHash(string input, HashAlgorithm algorithm)
        { 
         
            Byte[] inputBytes = Encoding.UTF8.GetBytes(input);
            Byte[] hashedBytes = algorithm.ComputeHash(inputBytes);
            return BitConverter.ToString(hashedBytes).Replace("-", "");
        }

        private string Post(string url, Dictionary<String, String> dic)
        { 
         
            string result = "";
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            StringBuilder builder = new StringBuilder();
            int i = 0;
            foreach (var item in dic)
            { 
         
                if (i > 0)
                    builder.Append("&");
                builder.AppendFormat("{0}={1}", item.Key, item.Value);
                i++;
            }
            byte[] data = Encoding.UTF8.GetBytes(builder.ToString());
            req.ContentLength = data.Length;
            using (Stream reqStream = req.GetRequestStream())
            { 
         
                reqStream.Write(data, 0, data.Length);
                reqStream.Close();
            }
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

            Stream stream = resp.GetResponseStream();
            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
            { 
         
                result = reader.ReadToEnd();
            }
            return result;
        }

        private string Truncate(string q)
        { 
         
            if (q == null)
            { 
         
                return null;
            }
            int len = q.Length;
            return len <= 20 ? q : (q.Substring(0, 10) + len + q.Substring(len - 10, 10));
        }
    }

先浏览一下，这个命令输出的man db中命令的个数。1872个命令帮助。

[root@status ~]# accessdb |wc -l
1872

将accessdb输出内容保存到一个文本文件，顺排序一下

[root@status ~]# accessdb | sort > accessdb.txt
[root@status ~]# ll
total 180
-rw-r--r--. 1 root root 155218 Apr 10 20:48 accessdb.txt
-rw-------. 1 root root   1068 Oct 15 18:41 anaconda-ks.cfg
[root@status ~]#

将生成的accessdb.txt文件下载到windows pc机。 打开Visual Studio 2022，创建一个控制台项目，添加上面修改后的类，在Program.cs文件中添加如下代码：

using ConsoleApp10;
using System.Text;

var output = new StringBuilder();
YouDaoFanyiV3 youDaoFanyiV3 = new YouDaoFanyiV3();

var data = File.ReadAllLines("E:\\accessdb.txt").ToList();
data.Sort(StringComparer.Ordinal);

char firstChar = 'z';
foreach (var item in data)
{ 
         
    if (firstChar != item[0])
    { 
         
        firstChar = item[0];
        output.AppendLine("```");
        output.AppendLine("## 以" + firstChar + "开头的命令");
        output.AppendLine("```bash");
    }
    var lines = item.Split("->");
    var command = lines[0].Trim();
    output.AppendLine(command);

    var descript = "";
    try
    { 
         
        descript = lines[1].Trim().Split("gz")[1].Trim().Trim('\"').Trim();
    }
    catch
    { 
         
        descript = lines[1].Trim().Trim('\"').Trim(); 
    }
    if (descript == "")
    { 
         
        output.AppendLine();
        continue;
    }

    output.Append("\t");
    output.AppendLine(descript.Replace("'","’"));
    output.Append("\t");

    Console.WriteLine(command);

    var trans = youDaoFanyiV3.Trans(descript);
    output.AppendLine(trans.translation[0]);

    Console.WriteLine("\t" + trans.translation[0]);
}

output.AppendLine("```");
File.WriteAllText("E:\\accessdb_ok.txt", output.ToString());

编译运行，执行完毕后，得到accessdb_ok.txt文件。文件内容如下：

$version$
	2.5.0
	2.5.0

.
	bash built-in commands, see bash(1)
	Bash内置命令，参见Bash (1)
.k5identity
	Kerberos V5 client principal selection rules
	Kerberos V5客户机主体选择规则
.k5login
	Kerberos V5 acl file for host access
	用于主机访问的Kerberos V5 acl文件
.ldaprc

/etc/anacrontab

30-systemd-environment-d-generator
	Load variables specified by environment.d
	由environment.d指定的加载变量

:
	bash built-in commands, see bash(1)
	Bash内置命令，参见Bash (1)

GnuPG~7

PAM~8
	Pluggable Authentication Modules for Linux
	Linux可插拔认证模块

RAND~7ssl
	the OpenSSL random generator
	OpenSSL随机生成器
RDMA-NDD~8

SELinux~8

TuneD~8

[
	bash built-in commands, see bash(1)
	Bash内置命令，参见Bash (1)

access.conf
	the login access control table file
	登录访问控制表文件
accessdb
	dumps the content of a man-db database in a human readable format
	以人类可读的格式转储man-db数据库的内容
acl
	Access Control Lists
	访问控制列表
addgnupghome
	Create .gnupg home directories
	创建.gnupg主目录
addpart
	tell the kernel about the existence of a partition
	告诉内核分区的存在
adduser
	create a new user or update default new user information
	创建新用户或更新默认新用户信息
agetty
	alternative Linux getty
	选择Linux盖蒂
alias
	bash built-in commands, see bash(1)
	Bash内置命令，参见Bash (1)
alternatives
	maintain symbolic links determining default commands
	维护确定默认命令的符号链接
anacron
	runs commands periodically
	定期运行命令
anacrontab
	configuration file for Anacron
	Anacron配置文件
applygnupgdefaults
	Run gpgconf - apply-defaults for all users.
	对所有用户执行gpgconf - apply-defaults命令。
apropos
	search the manual page names and descriptions
	搜索手册页面名称和描述
arch
	print machine hardware name (same as uname -m)
	打印机器硬件名称(与uname -m相同)
arpd
	userspace arp daemon.
	用户空间arp守护进程。
arping
	send ARP REQUEST to a neighbour host
	向邻居主机发送ARP请求
asn1parse
	ASN.1 parsing tool
	asn . 1解析工具
audit-plugins

audit.rules
	a set of rules loaded in the kernel audit system
	加载在内核审计系统中的一组规则
audit2allow
	generate SELinux policy allow/dontaudit rules from logs of denied operations
	从被拒绝的操作日志中生成SELinux policy allow/dontaudit规则
audit2why
	generate SELinux policy allow/dontaudit rules from logs of denied operations
	从被拒绝的操作日志中生成SELinux policy allow/dontaudit规则
auditctl
	a utility to assist controlling the kernel’s audit system
	一个帮助控制内核审计系统的工具
auditd
	The Linux Audit daemon
	Linux Audit守护进程
auditd-plugins
	realtime event receivers
	实时事件接收者
auditd.conf
	audit daemon configuration file
	审计守护进程配置文件
augenrules
	a script that merges component audit rule files
	合并组件审计规则文件的脚本
aulast
	a program similar to last
	类似于最后的程序
aulastlog
	a program similar to lastlog
	类似于lastlog的程序
aureport
	a tool that produces summary reports of audit daemon logs
	生成审计守护进程日志摘要报告的工具
ausearch
	a tool to query audit daemon logs
	用于查询审计守护进程日志的工具
ausearch-expression
	audit search expression format
	审计搜索表达式格式
ausyscall
	a program that allows mapping syscall names and numbers
	一个允许映射系统调用名和号码的程序
authselect
	select system identity and authentication sources.
	选择系统标识和认证源。
authselect-migration
	A guide how to migrate from authconfig to authselect.
	如何从authconfig迁移到authselect的指南。
authselect-profiles
	how to extend authselect profiles.
	如何扩展authselect配置文件。
autrace
	a program similar to strace
	类似于strace的程序
auvirt
	a program that shows data related to virtual machines
	显示与虚拟机有关的数据的程序
avcstat
	Display SELinux AVC statistics
	显示SELinux AVC统计信息
awk
	pattern scanning and processing language
	模式扫描和处理语言