Development Environment - All Things Linux

atl.sh is a full development environment. Everything is pre-installed system-wide and available immediately after login.

Languages and Runtimes

Language	Commands	Notes
Python	`python3`, `pip3`, `ipython3`, `bpython`	venv, pip, pipx all available
Node.js	`node`, `npm`, `npx`	packages install to `~/.local`
Ruby	`ruby`, `gem`, `irb`	gems install to `~/.local/share/gem`
Go	`go`	workspace at `~/.go`
Rust	`rustc`, `cargo`	toolchain at `~/.cargo`
Lua	`lua5.4`
Perl	`perl`
PHP	`php` (CLI only)
Java	`java`, `javac`	OpenJDK
Elixir	`elixir`, `iex`, `mix`	Erlang/OTP included
Erlang	`erl`, `erlc`
Haskell	`ghc`, `runghc`
OCaml	`ocaml`, `ocamlopt`
Scala	`scala`, `scalac`
Racket	`racket`
Ada	`gnat`
Fortran	`gfortran`
D	`gdc`, `ldc`	Two compilers
Pascal	`fpc` (Free Pascal)
COBOL	`cobc` (GnuCOBOL)
Vala	`valac`
Assembly	`nasm`, `yasm`
C#	`mcs` (Mono)
Objective-C	`gobjc`, `gobjc++`

Compilers and Build Tools

# C/C++
gcc, g++, clang, clang++

# Debuggers
gdb, cgdb, lldb, valgrind, ltrace, strace

# Build systems
make, cmake, ninja, meson, autoconf, automake

# Linkers / performance
mold          # fast linker
ccache        # compiler cache
linux-perf    # performance profiling
hyperfine     # benchmarking tool

# Parsing tools
bison, flex

Package Installation

All language package managers are configured to install into your home directory — nothing goes into system paths. Binaries land in ~/.local/bin, which is already in your PATH.

Python

# Isolated tool install (recommended)
pipx install black
pipx install poetry

# Per-project virtual environment
python3 -m venv .venv
source .venv/bin/activate
pip install requests

# uv (fast pip replacement, also available)
uv pip install requests

Poetry and uv share a system-wide cache at /var/cache/poetry and /var/cache/uv to avoid re-downloading packages across users.

Node.js

# npm installs to ~/.local automatically
npm install -g typescript

# pnpm (shared global store at /var/cache/pnpm)
pnpm add -g tsx

Ruby

# gems install to ~/.local/share/gem
gem install rails

Go

# binaries land in ~/.go/bin (already in PATH)
go install golang.org/x/tools/cmd/gopls@latest

Rust

# Cargo is pre-installed
cargo install ripgrep

PHP

# Composer installs to ~/.config/composer
composer global require laravel/installer

Deno

# Already in PATH at ~/.deno/bin
deno install --global npm:typescript

Editors

Editor	Command	Style
Neovim	`nvim`	Modal, highly extensible
Vim	`vim`	Modal, ubiquitous
Emacs	`emacs`	Everything editor
Nano	`nano`	Simple, non-modal
Micro	`micro`	Modern, keyboard shortcuts like GUI editors
Joe	`joe`	WordStar-style
Mg	`mg`	Tiny Emacs-compatible
Ed	`ed`	The standard editor

Terminal Multiplexers

Tool	Command	Notes
tmux	`tmux`	Default config pre-installed (see below)
screen	`screen`	Classic
byobu	`byobu`	tmux/screen wrapper with status bar
tmate	`tmate`	tmux + instant terminal sharing

tmux defaults

Your ~/.tmux.conf comes pre-configured:

Prefix: Ctrl-a (instead of the default Ctrl-b)
Mouse: enabled — click to select panes and windows
256 colors: enabled
Windows: start at index 1
History: 10,000 lines per pane

Common commands with the Ctrl-a prefix:

Ctrl-a c     new window
Ctrl-a n/p   next/previous window
Ctrl-a "     split horizontally
Ctrl-a %     split vertically
Ctrl-a d     detach (session keeps running)
tmux attach  reattach to your session

Shells

The default shell is bash. You can switch to any of the following:

Shell	Change command
zsh	`chsh -s /usr/bin/zsh`
fish	`chsh -s /usr/bin/fish`
mksh	`chsh -s /bin/mksh`

Changes take effect on next login.

Useful CLI Tools

A selection of what’s available:

# File navigation
lf, ranger, mc          # terminal file managers
eza                     # modern ls replacement
bat                     # cat with syntax highlighting
fd                      # fast find replacement
fzf                     # fuzzy finder
zoxide                  # smart cd replacement

# Search
ripgrep (rg)            # fast grep replacement

# Git
tig                     # terminal git browser
lazygit                 # full TUI git client
git-delta               # better diffs
git-lfs                 # large file storage
gh                      # GitHub CLI

# Data
jq, yq                  # JSON/YAML processors
sqlite3                 # SQLite CLI
bc                      # calculator

# Network
curl, wget, httpie      # HTTP clients
mosh                    # mobile shell (UDP, survives roaming)
mtr                     # traceroute + ping combined
nmap                    # network scanner
iperf3                  # bandwidth testing

# Monitoring
htop, btop, glances     # process monitors
iotop                   # I/O monitor
nethogs                 # per-process network usage
vnstat                  # bandwidth statistics

# Documentation
tealdeer (tldr)         # practical command examples
man, info               # full manuals

# Misc
direnv                  # per-directory environment variables
tmuxinator              # tmux session manager
shellcheck              # shell script linter
universal-ctags         # code tagging
units                   # unit conversion
pv                      # pipe progress viewer

Environment Paths

The following paths are added to your PATH at login via /etc/profile.d/environment-paths.sh:

Path	Purpose
`~/.local/bin`	pip tools, pipx, npm, general local installs
`~/.cargo/bin`	Rust/Cargo binaries
`~/.go/bin`	Go binaries
`~/.local/share/gem/bin`	Ruby gems
`~/.deno/bin`	Deno
`~/.config/composer/vendor/bin`	PHP Composer
`/var/cache/pnpm/bin`	pnpm global binaries

XDG directories are also set:

Variable	Path
`XDG_CONFIG_HOME`	`~/.config`
`XDG_CACHE_HOME`	`~/.cache`
`XDG_DATA_HOME`	`~/.local/share`
`XDG_STATE_HOME`	`~/.local/state`

​Languages and Runtimes

​Compilers and Build Tools

​Package Installation

​Python

​Node.js

​Ruby

​Go

​Rust

​PHP

​Deno

​Editors

​Terminal Multiplexers

​tmux defaults

​Shells

​Useful CLI Tools

​Environment Paths