Bash vs. Zsh: Key differences and when to use each - LogRocket Blog
Briefly

Bash and Zsh are two vital command-line shells on Unix-based systems, serving different user preferences. Bash, known for its speed and POSIX compliance, is ideal for scripting and administration. Zsh offers advanced customization options and plugin support via tools like Oh My Zsh, appealing especially to power users. Despite their differences, both shells are crucial for system management and development tasks, with Bash being more widely adopted due to its simplicity and compatibility.
Both Bash and Zsh are important and powerful tools used to perform advanced activities that may ordinarily not be available with GUI tools.
Bash is a lightweight, fast, and widely compatible command-line shell that prioritizes simplicity and portability, whereas Zsh is a more sophisticated shell that's ideal for users that prefer customization and interactivity.
Due to its POSIX compliance and speed, Bash is better suited for scripting and automation, while Zsh offers more customization for an intuitive scripting experience.
Zsh supports advanced plugins like Oh My Zsh, enhancing functionality compared to Bash's limited support.
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