diff --git a/org/bbs_gbk_utf8.org b/org/bbs_gbk_utf8.org
new file mode 100644
index 0000000..599cb12
--- /dev/null
+++ b/org/bbs_gbk_utf8.org
@@ -0,0 +1,82 @@
+#+TITLE: 支线任务: 中文 BBS GBK 转 UTF8
+#+DESCRIPTION: 造轮子好玩
+#+DATE: <2023-01-27 五>
+
+我过年这两天在服务器运维群看到了 水木清华BBS 这个东西,
+于是就 telnet 试了下, 发现字符集是 GBK!
+emmm, 设置环境变量启动终端不行, 就得在 gnome-terminal 设置里面弄.
+
+进去看了, 发现好多神奇的东西, 但整体还是没落, 现在还是虎年的欢迎页面...
+接合我之前在 sdf.org, 新黑客词典, youtube 等地方看到的关于 BBS 的记忆片段,
+使我开始考古这个从曾经那个时代来的我从没接触过的东西.
+
+先解决客户端问题:
+我在 Back To BBS 节目里面看到了 [[https://syncterm.bbsdev.net][Syncterm]] 和 [[http://www.mysticbbs.com/downloads.html][Netrunner]],
+一个不支持中文, 一个根本无法启动 (cannot open display).
+然后我找到了 qterm, 先是在水木 FreeBSD 版块看见的, 后来搜索 BBS 客户端时想起来了.
+下下来试一下, 不错. 但是我不想为了这一个东西而装一个额外软件, 还得编译.
+
+然后就想, 如果不能终端解码, 那为啥不先转换成 UTF8 再显示呢?
+那就 iconv? 结果人家是全输入完 EOF 了才显示...
+有没有方式能不缓冲而是 on-the-fly 呢? 搜索引擎没搜到.
+
+那就自己写!
+iconv 是基于 libiconv 库, 看看文档就能写了, 虽然我基本没写过 C 代码.
+#+BEGIN_SRC c
+#include <stdio.h>
+#include <iconv.h>
+
+#define UTF8_SIZE 4
+
+int
+convert_one(iconv_t cd)
+{
+    char inbuf[2] = {0};
+    char outbuf[UTF8_SIZE] = {0};
+    size_t insize = 1;
+    size_t outsize = UTF8_SIZE;
+
+    char c = getchar();
+    if (c == EOF)
+        return 1;
+    inbuf[0] = c;
+
+    char * pIn = inbuf;
+    char * pOut = (char*) outbuf;
+
+    size_t iconv_result = iconv(cd, &pIn, &insize, &pOut, &outsize);
+    if (iconv_result == (size_t) -1) {
+        inbuf[1] = getchar();
+        insize = 2;
+        iconv(cd, &pIn, &insize, &pOut, &outsize);
+    }
+
+    for (int i = 0; i < UTF8_SIZE; i++) {
+        if (outbuf[i] != 0)
+            putchar(outbuf[i]);
+        fflush(stdout);
+    }
+    return 0;
+}
+
+int
+main(void)
+{
+    iconv_t cd = iconv_open("UTF8", "GBK");
+    while (1)
+        if (convert_one(cd) == 1) break;
+
+    iconv_close(cd);
+    return 0;
+}
+#+END_SRC
+
+好使, 但是, 我写这篇文章的时候又过去看了眼那个帖子的回复, 发现有这个:
+#+BEGIN_EXAMPLE
+luit -encoding gbk <command>
+#+END_EXAMPLE
+嗯, 好使...
+另一个帖子说 GNU screen 也可以,
+然后搜索 screen 转码的时候看到了这个 [[https://wadarochi.github.io/2011/05/24/GNU-screen-encoding的替代品，自制BBS转码脚本/][GNU screen encoding的替代品，自制BBS转码脚本]]
+
+*但自己造轮子还是很开心哈哈*
diff --git a/org/cheatsheet.org b/org/cheatsheet.org
index ce1ed02..4a59f55 100644
--- a/org/cheatsheet.org
+++ b/org/cheatsheet.org
@@ -19,18 +19,20 @@
 | "{register}y/p | 向/从寄存器拷贝  |
 
 ** movement
-| key      | usage                      |
-|----------+----------------------------|
-| w/e      | 下一个单词/单词尾          |
-| b        | 单词头                     |
+| key      | usage                  |
+|----------+------------------------|
+| w/e      | 下一个单词/单词尾         |
+| b        | 单词头                  |
 | H/M/L    | 当前页面可见顶部/中间/底部 |
-| C-u(f)/d | 上/下翻页                  |
-| %        | 到对应括号                 |
-| {}       | 段落跳转                   |
-| g ;      | goto last change           |
-| g */#    | 正/反查找光标下的词        |
-| g d/D    | 跳转到本地/全局定义        |
-| C-w      | jump between splits        |
+| C-u(f)/d | 上/下翻页                |
+| %        | 到对应括号               |
+| {}       | 段落跳转                 |
+| g ;      | goto last change       |
+| g */#    | 正/反查找光标下的词       |
+| g d/D    | 跳转到本地/全局定义       |
+| C-w      | jump between splits    |
+| C-o/i    | Older/Newer position   |
+| `        | mark                   |
 
 ** file/split
 | key         | usage        |
diff --git a/org/internet_collections.org b/org/internet_collections.org
index 848d488..5a59cff 100644
--- a/org/internet_collections.org
+++ b/org/internet_collections.org
@@ -2,6 +2,7 @@
 #+TAGS: lowlevel(w) frontend(f) backend(b) algorithm(a) math(t)
 #+TAGS: hack(h) fun(u) wow(O)
 #+TAGS: emacs(m) linux(x) iot(i) plan9(9) BSD(B)
+#+TAGS: smth
 #+OPTIONS: toc:1 ^:{}
 
 #+TITLE: Internet Collections
@@ -13,13 +14,19 @@
  /--\   \_ (/_ |   |_ (_| | | |   |  | (_| (_| | (_ (_| |   _|_ | | (_| (/_ ><
                                             _|
 #+END_SRC
+
+#+BEGIN_QUOTE
+这才是互联网好玩的地方, 你总能在某个奇怪的角落发现神奇的东西
+-- 我
+#+END_QUOTE
+
 * (Personal) Blogs
 :PROPERTIES:
 :CUSTOM_ID: blog
 :END:
 #+TAGS: rssable(s) rssub(U) gopher(g)
 ** Random Stuff Floating Around
-not related to the root blog entry (I don't know what I mean)
+not related to the root blog entry (I don't know what I mean, do you?)
 *** [[https://www.luogu.com.cn/blog/ivystorm/emacs-adventuredunnet-tong-guan-jiao-cheng][luogu blog: emacs dunnet 教程]]                                   :emacs:
 *** [[https://bheisler.github.io/post/state-of-gpgpu-in-rust/][The State of GPGPU in Rust]]                              :rust:lowlevel:
 *** [[https://secretgeek.github.io/html_wysiwyg/][巧用 CSS 显示 HTML 源码]]                                      :frontend:
@@ -234,8 +241,10 @@ int function(void) {
 ** [[https://ifaceless.github.io/2019/11/17/guide-to-linux-scheduler/][论文学习之 Linux 调度器]]
 *** [[https://ifaceless.github.io/2019/10/30/linux-kernel-dev-notes/][Linux Kernel Development 学习与总结]]
 ** [[https://hardenedlinux.github.io][Hardened GNU/Linux]]                                                 :hack:
+** TODO [[https://briancallahan.net][Dr. Brian Robert Callahan]]                                      :BSD:
+*** [[https://briancallahan.net/blog/20220629.html][OpenBSD has two new C compilers: chibicc and kefir]]               :smth:
 
-** B
+** B/HWS/fri3nds
 *** [[https://shakaianee.top/][社会易姐]]
 *** [[https://blog.yangmame.org/][yanemame]]
 猴哥推荐的
@@ -251,14 +260,22 @@ EvanMeek / B站: 美味的樱桃菌
 **** [[https://sh.alynx.one/posts/Linux-Mooncake-Jokes/][Linux 用户的月饼食用手册]]                                        :fun:
 **** [[https://sh.alynx.one/posts/Do-Not-Fill-My-Email-with-Silly-Ads/][不要拿愚蠢的广告来污染我的邮箱]]
 **** [[https://sh.alynx.one/posts/Emacs-Monaco-Box-drawing-Character/][Emacs 和 Monaco 字体和 Box-drawing Character]]
+*** [[http://www.z.org.cn/][老网虫]]
+*** [[https://blog.yang-qwq.ml][yang-qwq]]
+*** [[http://blog.zhanganzhi.com/][zhanganzhi]]
+*** [[https://blog.bluemangoo.net/][芒果快评]]
+今年的新博客, 友链有踏浪
+*** [[https://acyanbird.github.io][山奈]]
+
 ** ZhiHu
 *** [[https://zhuanlan.zhihu.com/p/138719668][用Go语言汇编计算fibonacci数列]]                                :lowlevel:
 *** [[https://www.cnblogs.com/zjjws/p/13346020.html][第 N 个质数]]                                               :c:algorithm:
 看不懂, 先收藏着
 *** [[https://www.zhihu.com/column/c_1313110231912726528][倔强的程序员]]
 编! 译! 原! 理!
-*** [[https://www.zhihu.com/column/c_185117725][专栏: 技术考古]]                                              :plan9:
-plan9
+*** [[https://www.zhihu.com/column/c_185117725][专栏: 技术考古]]                                              :wow:plan9:
+**** [[https://web.archive.org/web/20220423091317/https://zhuanlan.zhihu.com/p/502733643][archive: 那些古老又优美的 GUI]]                                  :smth:
+***** [[https://guidebookgallery.org][GUI Gallery]]
 *** [[https://www.zhihu.com/column/roartalk][专栏: 嘶吼RoarTalk]]                                           :hack:
 回归最本质的信息安全
 *** [[https://zhuanlan.zhihu.com/p/464565089][我抵制Notepad++的理由]]
@@ -279,12 +296,6 @@ use the power of tor:
 *** [[https://www.zhihu.com/question/306745383][ubuntu重启变成了debian怎么办?]]
 U boom tu
 
-** shenjack/HWS/fri3nds
-*** [[http://www.z.org.cn/][老网虫]]
-*** [[https://blog.yang-qwq.ml][yang-qwq]]
-*** [[http://blog.zhanganzhi.com/][zhanganzhi]]
-*** [[https://blog.bluemangoo.net/][芒果快评]]
-今年的新博客, 友链有踏浪
 
 * YouTube (没有账号, 这就是我的收藏夹)
 :PROPERTIES:
@@ -404,11 +415,12 @@ to filing patently fraudulent DMCA counter-notifications to avoid the terminatio
 **** [[https://youtu.be/2CnAzLB0OjU][DT: As The Web Grows Bigger, It Seems Smaller]]
 *** [[https://youtu.be/Rsxao9ptdmI][Beating 5 Scam Arcade Games with Science]]
 街机科学家～
-*** [[https://youtube.com/playlist?list=PLgE-9Sxs2IBVgJkY-1ZMj0tIFxsJ-vOkv][BBS The Documentary(8)]]
 *** [[https://youtu.be/k35uDHs7Z9E][DT: A Disturbing Descent Into The Mind Of A Mad Man]]
 *** [[https://youtu.be/GlovVvBAIGk][DT: Keeping A Positive Attitude Even After Storm Destroys My Backyard]]
 *** [[https://www.youtube.com/@lecturesbywalterlewin.they9259][Lectures by Walter Lewin. They will make you ♥ Physics]]            :wow:
 *** [[https://youtu.be/dIivJwz5jL8][Nyan Cat piano arrangement sight-read by Tom Brier]]
+*** [[https://www.youtube.com/playlist?list=PLop3s1hMlSJKXqmuFjK7gbJh2WAyllTTY][Back to the BBS]]
+**** [[https://www.erb.pw][homepage]]
 
 * r
 :PROPERTIES:
@@ -441,6 +453,8 @@ to filing patently fraudulent DMCA counter-notifications to avoid the terminatio
 Huwawei NB!
 ** [[https://lkml.org/lkml/2007/7/27/426][Linus re SD]]
 ** [[https://marc.info/?l=openbsd-tech&m=167374666324119&w=2][openbsd-tech: xonly on amd64: testing wanted]]
+** [[https://lists.freebsd.org/pipermail/freebsd-current/2003-July/006889.html][freebsd : Annoucning DragonFly BSD!]]
+** [[https://minnie.tuhs.org/pipermail/tuhs/2022-April/025643.html][TUHS: Sad News - we last two wonderful people in the past few weeks]]
 
 * Other
 :PROPERTIES:
diff --git a/org/whatif_openbsd.org b/org/whatif_openbsd.org
index 200c113..1d61af5 100644
--- a/org/whatif_openbsd.org
+++ b/org/whatif_openbsd.org
@@ -109,6 +109,7 @@ grub> boot
 
 然后就是安装一堆软件
 我没有安装那些 "现代化 UNIX 工具", 比如 htop bat exa zoxide, (ripgrep 除外, 太好用了)
+7z 真的好用, 但是我觉得更应该学学标准的 UNIX 压缩解压工具 
 #+BEGIN_SRC ksh
 doas pkg_add firefox neovim git pcmanfm noto-cjk # 特别必要的
 doas pkg_add ripgrep fzf ncdu neofetch ranger p7zip colortree # 好用的工具
@@ -313,7 +314,9 @@ iwx0 at pci0 dev 20 function 3 "Intel Wi-Fi 6 AX201" rev 0x20, msix
 :CUSTOM_ID: btrfs
 :END:
 
-我有时候会想访问 Linux 上的文件, 但是似乎不支持 btrfs...
+我有时候会想访问 Linux 上的文件, 但是似乎不支持 btrfs...[fn:13]
+
+** [[https://dongdigua.github.io/bbs_gbk_utf8][支线任务: 中文 BBS GBK 转 UTF8]]
 
 
 * Footnotes
@@ -333,6 +336,7 @@ iwx0 at pci0 dev 20 function 3 "Intel Wi-Fi 6 AX201" rev 0x20, msix
 [fn:10] https://www.openbsd.org/faq/faq4.html#SendDmesg
 [fn:11] FAQ: dmesg archive https://www.mail-archive.com/misc@openbsd.org/msg162300.html
 [fn:12] NYC*BUG dmesgd https://dmesgd.nycbug.org/index.cgi
+[fn:13] Accessing Other Filesystems https://www.openbsd.org/faq/faq14.html#foreignfs
 
 * Related Links
 :PROPERTIES:
diff --git a/posts.md b/posts.md
index 7971b2a..e69e2e1 100644
--- a/posts.md
+++ b/posts.md
@@ -1,5 +1,6 @@
 ## Table of Contents
 ### Posts (sorted by time)
+- [支线任务: 中文 BBS GBK 转 UTF8](bbs_gbk_utf8)<br>
 - [我要不要试试 OpenBSD](whatif_openbsd)<br>
 - [一个乐子 commit](lol.diff.txt)<br>
 - [一次大备份](backup_everything)<br>