description Bash Overview
Bash is the standard shell for most Linux distributions. It is the backbone of shell scripting and is known for its reliability and widespread adoption. While it lacks some of the 'quality of life' features found in Fish or Zsh, its ubiquity ensures that any script written in Bash will run on almost any server in the world.
balance Bash Pros & Cons
- Ubiquitous on Linux systems
- Extensive scripting capabilities
- Massive community support
- Slower than modern alternatives
- Confusing array syntax
- Lacks native floating point
help Bash FAQ
Why is Bash still used when Zsh and Fish exist?
Bash is installed by default on many Linux systems, which makes it the safest target for portable shell scripts. It is the shell behind countless deployment scripts, Docker examples, and CI snippets.
What does Bash stand for?
Bash stands for Bourne Again SHell. It was created for the GNU Project as a free software replacement in the Bourne shell family.
Why does macOS use Zsh by default now?
Apple changed the default interactive shell to Zsh starting with macOS Catalina in 2019. Older Macs and many scripts still use Bash, and macOS has long shipped an older Bash 3.2 series because of licensing history.
What is the difference between Bash scripting and POSIX sh?
POSIX sh is the smaller portable shell language, while Bash adds features such as arrays, [[ tests, brace expansion, and richer completion behavior. If a script starts with #!/bin/bash, it can use Bash-specific features that may fail under /bin/sh.
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