dylanaraps/pure-sh-bible resource

Health v2 · maintenance only

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7733 stars · 369 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A reference book (in Markdown) collecting pure POSIX sh snippets that replace common external process calls using only shell built-ins. It helps script authors remove dependencies and write faster, more portable shell scripts.

Use cases

• replace grep/sed/awk calls in shell scripts with pure POSIX sh
• learn portable string manipulation in sh
• trim whitespace from strings without external tools
• parse key=value config files in POSIX shell
• loop over number ranges without seq
• make shell scripts faster by avoiding subprocess spawns

When to choose

• you write POSIX sh scripts and want to avoid external dependencies
• you need a vetted, shellcheck-linted reference of shell idioms
• you target minimal systems where only sh is available

When to avoid

• you need bash-specific features (see pure bash bible instead)
• you want a runnable tool or library rather than documentation
• you need comprehensive shell scripting tutorials for beginners

Facets

learning-resource · maturity maintenance

documentation developer-tools developer-tools tutorials bsd cli shell-scripting posix-sh reference-book snippets shellcheck command-line linux macos

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