Bash is a widely used command line interpreter and scripting language. It is the default shell for most Linux distributions. While Bash scripts are commonly used to perform important system tasks, they are not always written with the same discipline as other programming languages. Adopting practices like Bash strict mode, following style guides, using functions and testing can help make shell scripts more reliable. Productivity tools like Shellcheck, shfmt and Bats can aid in developing robust Bash scripts.