Bash Linux

A solid reference card for Bash essentials that covers command chaining operators, file operations, process management, and text processing tools. The script template with `set -euo pipefail` and the trap cleanup pattern are genuinely useful if you write shell scripts beyond one-liners. I like the comparison table with PowerShell, which helps if you're coming from Windows. The network commands and process management sections (especially the port killing one-liners) are the kind of thing you google every time until you don't. This won't teach you Bash from scratch, but it's a decent cheat sheet for common patterns when working in Linux or macOS terminals.

skills.sh installs: 1.5K
GitHub stars: 43.1K
last updated: Jul 14, 2026

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Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill bash-linux --agent claude-code

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Bash Linux Patterns

Essential patterns for Bash on Linux/macOS.

1. Operator Syntax

Chaining Commands

Operator	Meaning	Example
`;`	Run sequentially	`cmd1; cmd2`
`&&`	Run if previous succeeded	`npm install && npm run dev`
`\|\|`	Run if previous failed	`npm test \|\| echo "Tests failed"`
`\|`	Pipe output	`ls \| grep ".js"`

2. File Operations

Essential Commands

Task	Command
List all	`ls -la`
Find files	`find . -name "*.js" -type f`
File content	`cat file.txt`
First N lines	`head -n 20 file.txt`
Last N lines	`tail -n 20 file.txt`
Follow log	`tail -f log.txt`
Search in files	`grep -r "pattern" --include="*.js"`
File size	`du -sh *`
Disk usage	`df -h`