What is the default shell for most Linux distributions?

The default shell for most Linux distributions is bash, which stands for "Bourne Again SHell." This shell is widely used in various Linux environments due to its versatility and user-friendly features. Bash has become the standard shell because it enhances the original Bourne shell (sh) with additional capabilities such as improved scripting options, command line editing, and job control.

Many distributions, including popular ones like Ubuntu, Fedora, and CentOS, have chosen bash as their default for its robust functionality and compatibility with scripts written for the Bourne shell. It provides a strong balance of features that cater to both new users and advanced users alike, making it a common choice across systems.

While other shells like sh, ksh (KornShell), and zsh (Z Shell) each have their own unique features and strengths, they aren't generally set as the default in the majority of Linux distributions. For example, sh is more limited in functionality compared to bash, while ksh and zsh, though powerful, are less commonly used as defaults in contemporary distributions. Thus, bash's widespread adoption and comprehensive feature set solidify its status as the default shell in the Linux world.