Once ShellCheck installed, let’s take a look at how to use ShellCheck in the various methods we mentioned before. On RHEL/CentOS # yum -y install epel-release On Debian/Ubuntu # apt-get install shellcheck ShellCheck can be easily installed locally through your package manager as shown. How to Install and Use ShellCheck in Linux In this article, we will show how to install and use ShellCheck in the various ways to find bugs or bad code in your shell scripts in Linux. It also points out subtle caveats, corner cases and pitfalls that may cause an advanced user’s otherwise working script to fail under future circumstances.It points out and explains typical intermediate level semantic problems that cause a shell to behave strangely and counter-intuitively.It points out and explains typical beginner’s syntax issues that cause a shell to give cryptic error messages. There are three things ShellCheck does primarily: It can be used in several ways: from the web by pasting your shell script in an online editor (Ace – a standalone code editor written in JavaScript) in (it is always synchronized to the latest git commit, and is the simplest way to give ShellCheck a go) for instant feedback.Īlternatively, you can install it on your machine and run it from the terminal, integrate it with your text editor as well as in your build or test suites. ShellCheck is a static analysis tool that shows warnings and suggestions concerning bad code in bash/sh shell scripts.
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