TestingGuide
Testing Shell Scripts With Bats and ShellCheck in Practice
Test shell scripts with Bats and ShellCheck: write tests, mock commands, test functions, run in CI and containers, and catch quoting bugs before they ship.
36 min read
Topic
Shell Scripting
POSIX sh, zsh and the portability gaps between them, for scripts that behave the same on a laptop, a server and a CI runner.
SecurityGuide
Shell Script Security From Quoting to Least Privilege
A practical shell script security guide: quoting, option injection, eval, temp files, PATH, secrets, sudo and least privilege, with attacks run and fixed.
36 min read
Shell ScriptingGuide
Portable Shell Scripts and POSIX sh Versus Bash in Practice
Write portable shell scripts that run on dash, BusyBox and Bash: what POSIX sh allows, which Bashisms to drop, and how to test on each shell.
35 min read
BashGuide
Bash Scripting From Zero to a Script You Can Trust
A complete Bash scripting tutorial: variables, quoting, tests, loops, functions, arrays, exit codes, traps and a finished backup script you can trust.
37 min read
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