shellscommonly
Shellscommonly is not an established term; it is used here to refer to the set of command-line shells commonly encountered across operating systems. A shell is a user interface that serves as a command interpreter, executing user commands, launching programs, and providing scripting capabilities. The phrase acts as a neutral shorthand for comparing features, syntax, and compatibility among widely used shells.
Shells offer interactive prompts, job control, environment variables, and the ability to construct pipelines and scripts
Common shells include Bash (Bourne Again Shell), which dominates Linux and many Unix systems for both interactive
When choosing a shell, users weigh factors such as interactivity, script portability, ecosystem tooling, and cross-platform