-老师上课放(U盘里)视频的时候 "啪" 把U盘拔了!
-下一次插上就提示 "是否格式化" :)
-反正闲时间太多, 我就准备试试给修复一下, 使用我在我文具盒里待了两年的工具箱: Ventoy 启动盘
-我首先是对 Linux 文件系统有一定基础, 也进行过不少操作(如多次安装gentoo和arch)
-也搞过一些文件系统损坏的事(比如调分区坏过C盘), 还算有经验
-于是我上老师电脑启动了两年前放在工具箱盘里的 Fedora Workstation 34
-把老师的U盘插上, "嘎嗒"一声熟悉的 gnome 提示音, U盘没显示
-有 /dev/sdc
mount -t 试试? 是不是没文件系统坏了没识别? 不是
fsck 试试? 不行
-嗯??? 似乎有点超出我的知识储备和经验了
-只有一个整盘, 没有分区号? 凭直觉, 我觉得那就是分区表坏了
-然后查了一下(当然用英文查), 有没有能修复分区表的? testdisk
-然后先用 dd 整盘备份一下, 跑 testdisk
-很简单就把分区表恢复出来了!
-那就开始拷文件吧…"文件不完整"
-和 testdisk 一家的软件还有 photorec, 我似乎在 linuxcn 见过(懒得去找链接了)
-这东西一看就知道是通过文件头来识别并恢复文件的
-那就跑呗
-一节课之后, 文件(和曾经被删除的)都回来了
-开心!
-我可以比较廉价的进行数据恢复
-联系我后将磁盘镜像传到 FTP 服务器, 不接百度网盘
-暂定价如下:
-恢复完之后我想瞅瞅那些教学视频, 正常来讲 f34 应该有解码器的, 但是没有
-是不是我连着网给我删了?
-when I compile Clear kernel with LLVM enabled, I got this error:
arch/x86/kernel/cpu/intel_epb.c:172:2: error: call to undeclared function 'sched_set_itmt_power_ratio'; -ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] - sched_set_itmt_power_ratio(256 - val * 2, cpu); - ^ -arch/x86/kernel/cpu/intel_epb.c:172:2: note: did you mean 'sched_set_itmt_core_prio'? -./arch/x86/include/asm/topology.h:189:20: note: 'sched_set_itmt_core_prio' declared here -static inline void sched_set_itmt_core_prio(int prio, int core_cpu) - ^ -1 error generated. --
-it's obvious that the sched_set_itmt_power_ratio function is undeclared
-so I added the following like the function on top of it
-and it is able to compile :)
--- /home/gentoo/linux/topology.h - +++ arch/x86/include/asm/topology.h - @@ -189,6 +189,9 @@ - static inline void sched_set_itmt_core_prio(int prio, int core_cpu) - { - } -+static inline void sched_set_itmt_power_ratio(int prio, int core_cpu) -+{ -+} - static inline int sched_set_itmt_support(void) - { - return 0; --
-Notice: I'm ignorant about C programming, so if anything's wrong, please contact me
-Recently, I would like to test switching from gcc to clang on my Gentoo VM.
warning: you will be crazy to have too many packages can't be build with clang
-First I want to make LLVM not targeting too many platform, but changing LLVM_TARGETS don't work
[ebuild N ] sys-devel/llvm-15.0.3:15::gentoo USE= "binutils-plugin libffi - ncurses -debug -doc -exegesis -libedit -test -verify-sig -xar -xml -z3 -zstd" - LLVM_TARGETS= "(AArch64) (AMDGPU) (ARM) (AVR) (BPF) (Hexagon) (Lanai) (MSP430) - (Mips) (NVPTX) (PowerPC) (RISCV) (Sparc) (SystemZ) (VE) (WebAssembly) (X86) - (XCore) (-ARC) (-CSKY) (-DirectX) (-LoongArch) (-M68k) (-SPIRV)" 241 KiB --
-It seems that global LLVM_TARGETS setting is not respected,
-and flags such as llvm_targets_AArch64, llvm_targets_ARM, are no longer there.
-They're now forced by default as a precaution.
*/* -llvm_targets_AArch64 into /etc/portage/profile/package.use.force
-I excluded all targets exept for X86, but still 3 left: AMDGPU, BPF, NVPTX
sys-devel/llvm -llvm_targets_AMDGPU -llvm_targets_BPF -llvm_targets_NVPTX in /etc/portage/package.use/[ebuild N ] sys-devel/llvm-15.0.3:15::gentoo USE= "binutils-plugin libffi - ncurses -debug -doc -exegesis -libedit -test -verify-sig -xar -xml -z3 -zstd" - LLVM_TARGETS= "(X86) -AArch64 -AMDGPU (-ARC) -ARM -AVR -BPF (-CSKY) (-DirectX) - -Hexagon -Lanai (-LoongArch) (-M68k) -MSP430 -Mips -NVPTX -PowerPC -RISCV - (-SPIRV) -Sparc -SystemZ -VE -WebAssembly -XCore" 241 KiB --
-for https://cossig.org(CentOS 中文特别兴趣小组)
-link: https://www.cossig.org/391-centos-fedora-default-softwares
-所以我这回不用英文了哈哈
-CentOS 安装时可选不同的配置
- 
-其实这些就是不同的软件组
-CentOS-Stream 8 为例, 定义软件组的文件是 comps.xml
-左边的基本环境就是
-一共有11个
< environment variant= "BaseOS"> - < id>custom-environmentid> - < name>Custom Operating Systemname> - < display_order>5display_order> - -environment> -< environment variant= "BaseOS"> - < id>minimal-environmentid> - < name>Minimal Installname> - < display_order>4display_order> - -environment> -< environment> - < id>server-product-environmentid> - < name>Servername> - < display_order>2display_order> - -environment> -< environment arch= "aarch64,s390x,ppc64le,x86_64"> - < id>graphical-server-environmentid> - < name>Server with GUIname> - < display_order>1display_order> - -environment> -< environment variant= "BaseOS"> - < id>cloud-server-environmentid> - < name>Cloud Servername> - < display_order>3display_order> - -environment> -< environment variant= "BaseOS"> - < id>web-server-environmentid> - < name>Web Servername> - < display_order>50display_order> - -environment> -< environment> - < id>infrastructure-server-environmentid> - < name>Infrastructure Servername> - < display_order>60display_order> - -environment> -< environment variant= "AppStream" arch= "x86_64,ppc64le"> - < id>developer-workstation-environmentid> - < name>Development and Creative Workstationname> - < display_order>90display_order> - -environment> -< environment variant= "AppStream" arch= "x86_64,ppc64le"> - < id>gnome-desktop-environmentid> - < name>GNOME Desktopname> - < display_order>80display_order> - -environment> -< environment variant= "AppStream" arch= "x86_64,ppc64le"> - < id>workstation-product-environmentid> - < name>Workstationname> - < display_order>3display_order> - -environment> -< environment variant= "AppStream" arch= "x86_64"> - < id>virtualization-host-environmentid> - < name>Virtualization Hostname> - < display_order>70display_order> - -environment> --
-但还是对不上, 应该很接近了…吧?
-想起来不联网是没法选择安装软件的
-然后瞅一眼产生的临时文件 /tmp/dnf.cache/
├── appstream-831abc7e9d6a1a72 -│ ├── metalink.xml -│ └── repodata -│ ├── 95f4408838f85e23117d7d89ab47e1029692a443722e0e315fe3db07c32ee573-modules.yaml.xz -│ ├── 2047121fda8828f9b4d611cbfb736a89048cb411356e7ac2bdd95d927d044791-filelists.xml.gz -│ ├── e27fd8f9028bdc339a014f95debd07da4ef7b217522d14721af050aa9e7cf93e-primary.xml.gz -│ ├── f0d518764a274c71de0773b3590932ded56234b2f6ac4bf025d125b7ed29269f-comps-AppStream.x86_64.xml -│ ├── gen -│ │ └── groups.xml -│ └── repomd.xml -├── baseos-044cae74d71fe9ea -│ ├── metalink.xml -│ └── repodata -│ ├── 88ded6c02c5c3c62ab02250505cf0b8dee3af85819b666731c3cf813c275db6c-primary.xml.gz -│ ├── b47aeefede03d4d530f4538bf8f73531fd1a6a2bb66ca1778e3423c4dec34121-filelists.xml.gz -│ ├── d52d95f0f2d1a56b197a698aa328813a7e45e2d5b2883e04f4a3f604638b7a4a-comps-BaseOS.x86_64.xml -│ ├── gen -│ │ └── groups.xml -│ └── repomd.xml --
-那里面的 *-comps-*.xml 的
-就正好是 1~4 和两个 99
- comps-AppStream.x86_64.xml
< environment> - < id>graphical-server-environmentid> - < name>Server with GUIname> - < description>An integrated, easy-to-manage server with a graphical interface.description> - < display_order>1display_order> - < grouplist> - < groupid>base-xgroupid> - < groupid>container-managementgroupid> - < groupid>coregroupid> - < groupid>fontsgroupid> - < groupid>gnome-desktopgroupid> - < groupid>guest-desktop-agentsgroupid> - < groupid>hardware-monitoringgroupid> - < groupid>hardware-supportgroupid> - < groupid>headless-managementgroupid> - < groupid>internet-browsergroupid> - < groupid>multimediagroupid> - < groupid>networkmanager-submodulesgroupid> - < groupid>print-clientgroupid> - < groupid>server-productgroupid> - < groupid>standardgroupid> - grouplist> - < optionlist> optionlist> -environment> -< environment> - < id>server-product-environmentid> - < name>Servername> - < description>An integrated, easy-to-manage server.description> - < display_order>2display_order> - < grouplist> - < groupid>container-managementgroupid> - < groupid>coregroupid> - < groupid>hardware-supportgroupid> - < groupid>headless-managementgroupid> - < groupid>server-productgroupid> - < groupid>standardgroupid> - grouplist> - < optionlist> optionlist> -environment> -< environment> - < id>virtualization-host-environmentid> - < name>Virtualization Hostname> - < description>Minimal virtualization host.description> - < display_order>99display_order> - < grouplist> - < groupid>basegroupid> - < groupid>coregroupid> - < groupid>standardgroupid> - < groupid>virtualization-hypervisorgroupid> - < groupid>virtualization-toolsgroupid> - grouplist> - < optionlist> optionlist> -environment> -< environment> - < id>workstation-product-environmentid> - < name>Workstationname> - < description>Workstation is a user-friendly desktop system for laptops and PCs.description> - < display_order>4display_order> - < grouplist> - < groupid>base-xgroupid> - < groupid>coregroupid> - < groupid>fontsgroupid> - < groupid>gnome-desktopgroupid> - < groupid>guest-desktop-agentsgroupid> - < groupid>hardware-supportgroupid> - < groupid>internet-browsergroupid> - < groupid>multimediagroupid> - < groupid>networkmanager-submodulesgroupid> - < groupid>print-clientgroupid> - < groupid>standardgroupid> - < groupid>workstation-productgroupid> - grouplist> - < optionlist> optionlist> -environment> --
- comps-BaseOS.x86_64.xml
< environment> - < id>custom-environmentid> - < name>Custom Operating Systemname> - < description>Basic building block for a custom RHEL system.description> - < display_order>99display_order> - < grouplist> - < groupid>coregroupid> - grouplist> - < optionlist> optionlist> -environment> -< environment> - < id>minimal-environmentid> - < name>Minimal Installname> - < description>Basic functionality.description> - < display_order>3display_order> - < grouplist> - < groupid>coregroupid> - grouplist> - < optionlist> optionlist> -environment> -< environment> - < id>server-product-environmentid> - < name>Servername> - < description>An integrated, easy-to-manage server.description> - < display_order>2display_order> - < grouplist> - < groupid>coregroupid> - < groupid>hardware-supportgroupid> - < groupid>headless-managementgroupid> - < groupid>server-productgroupid> - < groupid>standardgroupid> - grouplist> - < optionlist> optionlist> -environment> --
-Fedora 分不同的变体, 常见的是 Server 和 Workstation
-与 CentOS 不同, Fedora 是在 kickstarts 定义的变体
-在 [Payload] 中定义了安装哪些软件(组)
-然后根据 comps.xml 就知道安装了什么软件
- workstation-product-environment
< environment> - < id>workstation-product-environmentid> - < _name>Fedora Workstation_name> - < _description>Fedora Workstation is a user friendly desktop system for laptops and PCs._description> - < display_order>2display_order> - < grouplist> - < groupid>base-xgroupid> - < groupid>container-managementgroupid> - < groupid>coregroupid> - < groupid>firefoxgroupid> - < groupid>fontsgroupid> - < groupid>gnome-desktopgroupid> - < groupid>guest-desktop-agentsgroupid> - < groupid>hardware-supportgroupid> - < groupid>libreofficegroupid> - < groupid>multimediagroupid> - < groupid>networkmanager-submodulesgroupid> - < groupid>printinggroupid> - < groupid>workstation-productgroupid> - grouplist> - < optionlist> optionlist> -environment> --
- server-product-environment
< environment> - < id>server-product-environmentid> - < name>Servername> - < display_order>2display_order> - < grouplist> - < groupid>server-productgroupid> - < groupid>standardgroupid> - < groupid>coregroupid> - < groupid>hardware-supportgroupid> - < groupid>headless-managementgroupid> - < groupid>container-managementgroupid> - grouplist> - < optionlist> optionlist> -environment> --
-I wanna use matrix just because many people use it.
-💓kde
-small but have most of function
-fancy scrollbar, can configure proxy in app
-wayland support not good: error copying image(like qutebrowser)
-I like doing everything in emacs, with keyboard
-but it don't work: https://github.com/alphapapa/ement.el/issues/77
-HUGE and not fully fonctionall
-all-in-one solution, matrix support is not good: cannot show picture
-I even don't use it for email(I use Geary)
-env: http_proxy
-env: https_proxy
-accroding to reqwest document
-var: plz-curl-default-args
-donot run under root
-add user in video group
-login as user, not root
-enable 3D acceleration in VirtualBox
- 
-but it is copied using xoriso to /iso/
-so I need to write a systemd service to automagically sync it at boot
- /nix/store/ takes too much space after build
unlink result -nix-store--
-and there're a few tools for visualising disk size:
https://nixos.wiki/wiki/Cleaning_the_nix_store
-- - -]]>-互联网是有记忆的
-
-全都是你的所作所为
-here are some of my ideas, most of which are unachieveable now
-you can steal them, but you'd better let me know and add a reference
console.log() in Message
-just a dream
-用于点踩和查看IP属地
-呵呵, 在B站看到这样的基本就是壁纸软件的广告
-it's this domain's workers that COMSTANTLY scanning the WHOLE internet
-about the scanner and IP range
---博客主评价，有很多包括stretchoid.com的组织，有的是把自己伪装成科研实验用数据，并没有恶意，有的是什么理由也不给，只是不停地扫描全网的网站。
-
-其中也包括像密歇根大学，加州大学伯克利分校的访问信息。因为网络安全领域没有类似于“希波克拉底誓言”的东西，所以不能像医生一样信任
-就像到处晃别人家的门把手而不打开不是犯罪，但是真正的打开就混在发现没有锁门，而晃门把手时。
-the original post is gone
---您还可以开始执行DNS和WHOIS查找，以找出每次扫描背后的人员。
-
-在这个简短的样本中，我找到了一个伪“研究员”：107.170.202.111解析为“zg-0301f-15.stretchoid.com”。
-他们没有确定他们正在做什么或为什么他们在161 / udp扫描我的蜜罐。（端口161 / udp是为简单的网络管理协议（SNMP）保留的，并且经常容易受到攻击。）
-是的，他们把“malicious”拼错了 - 因此它可能不会出现在谷歌搜索“stretchoid and malicious”的结果中。
-sway can't, probably wayfire?
sudo -E
-yes, still not stable, and it can't remenber which DE you used last time
so use gdm is a better choice?
-SDDM is fantastic! It is themeable,
-I'm using elarun, a oxygen-like smooth crystal theme, materia-kde is also a good choice
-don't remove the include line in sway/config
- from this issue
-add seat seat0 xcursor_theme Oxygen_White in sway config file
-use libinput-gestures
-mako, a notification daemon
default-frame-alist, or just use floating mode
-this feature is not compatible with i3, so sway didn't accept the pr
- xev/wev is helpful
-a great config
-sway, very beautiful, from COSSIG
-this is excellent, but…not for me, I'd like something simpler
-awesome config!
M-x gdb-display-disassembly-buffer
-from Wikipedia
-x86 is little endian
