Which Workloads Benefit from SMT (Hyper-Threading) Running Multiple Threads per Physical Core, and Which Don't

How SQLite Uses pthread_mutex and fcntl to Coordinate Reads and Writes from Multiple Threads and Processes

SSH into ECS Fargate from Smartphone via Termius using Tailscale

Trying out bubblewrap used in Claude Code's Sandbox Runtime and exploring its network restriction mechanism

Run tc command to set qdisc and limit network delays and bandwidth

fzf and zoxide let you select files and navigate to directories with fuzzy completion while previewing them

Run logrotate sidecar in Kubernetes

How faster is sending/receiving values by UNIX domain socket than starting new processes when executing commands

shellの条件分岐の[と[[

127.0.0.1(localhost)と0.0.0.0

FluentdがどのようにMulti Process Workersで処理を実行しているのか実装を追う

makeで環境変数とMakefileの変数、引数の値の内どの値が参照されるか

nkfによる文字コードの判定とGoでのShiftJISの扱い

Goのnet/http/pprofでCPUやMemoryをprofileする流れと内部実装

User NamespaceでrootになってNetwork Namespaceを作りvethとNATで外と通信する

SystemdのService

nohupし忘れた時間のかかる処理をdisownしてexit後も実行させ続ける

tmuxのメモ

Unixのパイプをmkfifo()で作ってdup2()で標準出力にコピーして書き込む

crontabのメモ

iftopでネットワークの帯域を見る

vmstatのメモ

Options for SSH port forwarding

Increase the maximum number of file descriptors

logrotateでログをローテーションする