#CLI

2026-05-24のJS: pnpm 11.1〜11.3、npm CLI v11.15.0、Deno 2.8

Unified skills, Python docs, email management

What's new in Arcjet (2026-05-22). Unified coding agent skills, expanded Python docs, email notification management.

Testing Go CLIs with testscript

How cmd/go's script tests led me to testscript, and how to use it for CLI tests that exercise argv, stdout, stderr, exit codes, and scratch files.

tmux extended-keys option and Neovim keymaps with modifiers

today iain learned: how to enable the tmux extended-keys option and use it to add more Neovim keymaps with modifiers

CSVs are terrible, Miller makes them bearable

today iain learned: that working with CSVs in the terminal or text editors is terrible, but the Miller CLI tool makes it bearable!

Remap the CapsLock key in Linux

today iain learned: How to remap the CapsLock key with a tap-hold keybind in Linux

Use terminal commands for displaying a Neovim dashboard logo

today iain learned: How to use terminal commands for displaying a custom Neovim dashboard logo on startup

Flags for discoverable test config in Go

Control Go test behavior with custom flags instead of build tags or env vars. Enable integration and snapshot tests with discoverable CLI options.

Dynamic shell variables

Learn variable indirection in Bash with ${!var} syntax. Build context-aware configs, function dispatch, and dynamic variable name resolution.

Discovering direnv

Automate environment variables per directory with direnv. Load .envrc files on entry, unload on exit. Integrate with Python venv and uv workflow.

Bash namerefs for dynamic variable referencing

Master Bash namerefs with declare -n to create dynamic variable references. Build generic functions for arrays and associative arrays without eval.

The *nix install command

Replace mkdir, cp, and chmod with a single install command. Copy files, create directories, and set permissions in one step with GNU coreutils.

Pesky little scripts

Organize custom scripts with comma-prefixed naming. Improve tab completion and eliminate clutter by prefixing script names with special characters.

Dotfile stewardship for the indolent

Manage dotfiles across devices with GNU Stow. Symlink configuration files from git repo to home directory with simple, idempotent commands.

Dynamic menu with select statement in Bash

Build interactive CLI menus with Bash select statement. Create user-friendly command-line tools with option selection and function dispatch.

Simple terminal text formatting with tput

Format terminal output with tput instead of ANSI codes. Set colors, bold text, underlines, and backgrounds with simple commands in shell scripts.

Colon command in shell scripts

Use the colon : command as a no-op in Bash scripts for cleaner debug output with -x flag. Alternative to echo for section markers and comments.

Automerge Dependabot PRs on GitHub

Automatically merge Dependabot pull requests using GitHub Actions. Configure branch protection and status checks for safe automated dependency updates.

Inspect docstrings with Pydoc

View Python docstrings from the command line with pydoc or serve them as HTML documentation for modules, classes, and functions.

Don't add extensions to shell executables

Why executable scripts shouldn't have extensions. Learn GitHub's scripts-to-rule-them-all pattern for language-agnostic project automation.

Use 'command -v' over 'which' to find a program's executable

Replace which with command -v for POSIX-compliant executable lookup. Learn why command -v is the portable alternative for finding program paths.