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---
title: "Shell"
type: concept
tags: [linux, shell]
sources: ["raw/Home Office/Linux 运维必会的 150 个命令.md"]
last_updated: 2026-04-16
---
## Definition
Shell命令解释器是 Linux 系统的用户界面,负责解释和执行用户输入的命令。它作为用户与内核之间的桥梁,将用户的命令转换为系统调用。
## Common Types
- **Bash**:最常用的 ShellLinux 默认
- **Zsh**:功能强大的增强版 Shell
- **Fish**:用户友好的交互式 Shell
## Related Commands
- help查看内置命令帮助
- type判断命令是否为内置命令
- alias设置命令别名
- unalias取消命令别名