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Bash Basics: Essential Terminal Commands Every Developer Should Know

Core Bash commands every developer uses daily on Linux/macOS — navigation, file management, search and example workflows.

6 minute read
Bash Basics infographic with sections on navigation, listing, file management, content viewing, search and useful commands across 10 panels

Bash is the standard shell on Unix-based systems including Linux and macOS. As a developer, almost every daily task — file management, running builds, inspecting logs, deploying to the cloud — flows through the terminal. This guide walks through the 10 sections of the infographic, summarizing the most-used commands with examples; what matters is recognizing which command fits which situation, not memorizing them all.

What is Bash?

A shell that's both a command-line interface and a scripting language. It's how you talk to the operating system. It ships by default on Linux, macOS and WSL; you use it interactively for one-off commands and via .sh files for automation.

  • Run commands
  • Interact with the OS
  • Common on Linux, macOS and WSL

Navigation

The three commands you'll move around the filesystem with: pwd, cd, ls.

bash
pwd               # print current directory
cd folder         # enter a sub-directory
cd ..             # go up one level
cd ~              # go to home
ls                # list files

Listing Files

Different ls flags give you different levels of detail.

bash
ls               # list
ls -l            # long format (perms, size, date)
ls -a            # include hidden files
ls -lh           # human-readable sizes (KB, MB)

File & Directory Management

Create, move, copy and delete operations:

bash
mkdir folder              # create folder
touch file.txt           # create empty file
cp file.txt backup.txt   # copy
mv file.txt new.txt      # move / rename
rm file.txt              # delete
rm -r folder             # delete recursively

File Content

Commands for viewing what's inside files:

bash
cat file.txt        # print content
less file.txt       # page through (q to quit)
head file.txt       # first 10 lines
tail file.txt       # last 10 lines
tail -f log.txt     # live-tail a log

Search & Filter

The two most powerful commands for searching inside files or the filesystem are grep and find:

bash
grep "error" log.txt           # search in a file
grep -r "TODO" .               # recursive search
find . -name "*.ts"            # find ts files
find . -type d -name "dist"    # find dist directories

Useful Commands

Small but constantly-used utilities:

bash
clear            # clear the screen
echo "hello"     # print to screen
man ls           # command manual
which node       # show command path
history          # previous commands

Tips

Shortcuts that multiply your productivity:

  • Tab — auto-complete (file/command)
  • ↑ ↓ — walk through history
  • Ctrl+C — stop running command
  • Ctrl+R — quick history search
  • Ctrl+L — clear-screen shortcut

A Common Workflow

A chain of commands you'd run when starting a new project:

bash
mkdir project
cd project
touch index.js
ls
# then:
git init
npm init -y

Summary

Bash gives developers and DevOps full control of their system. It's faster than a GUI, scriptable, and works the same way on remote servers. Even just a couple of dozen commands will noticeably boost your daily productivity.

Frequently Asked Questions

Common questions about this topic.

How is Zsh different from Bash?

Zsh is largely Bash-compatible and adds extra features (oh-my-zsh, autocomplete plugins). It's been the macOS default since Catalina. Every command in this guide works the same in both.

Can I use Bash on Windows?

Yes. WSL (Windows Subsystem for Linux) gives you a real Linux shell. Git Bash is also a fine alternative for everyday commands.

Is rm -rf really dangerous?

Yes. rm -rf / can permanently wipe system files. Always verify the path with ls first, and consider trash or rm -i (interactive).

How do I write a Bash script?

Create a .sh file, add #!/bin/bash at the top and run chmod +x to make it executable. Variables, loops and functions make small automations easy.

What should I learn for productivity?

Tab autocomplete, aliases, pipes (|), redirects (>), && / ||, history (Ctrl+R) and grep/find combinations buy you the most time. Master these and you're set.

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