What is the default shell in most Linux distributions?

The default shell in most Linux distributions is bash, which stands for "Bourne Again SHell." It is widely adopted due to its rich feature set, improved user experience, and compatibility with scripts written for the original Bourne shell (sh). Since its introduction, bash has become the standard for most Linux users because it provides advanced features such as command-line editing, job control, functions, and a robust scripting language, all of which enhance productivity and ease of use in the command-line interface.

Other shells, such as sh, tcsh, and zsh, have their own unique features and capabilities but are not as commonly set as default across the majority of Linux distributions. While sh is a predecessor to bash, it lacks many of the enhancements that make bash more user-friendly. Both tcsh and zsh offer powerful features and are popular among specific user groups; however, they do not hold the same level of widespread adoption as bash in the standard Linux environment.